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Encyclopedia results for Protein mass spectrometry

Protein mass spectrometry





Encyclopedia results for Protein mass spectrometry

  1. Flowing-afterglow mass spectrometry

    Context date October 2009 Flowing afterglow mass spectrometry , FA MS, is a sensitive and quantitative mass spectrometry analytical approach that offers a route to on line, real time deuterium abundance measurements in water vapour in breath and above aqueous liquids, including urine and serum. ref cite book author year 2004 title Handbook of Stable Isotope Analytical Techniques publisher Elsevier isbn 0 444 51114 8 ref This method involves the production and flow of thermalised hydrated hydronium cluster ions in inert helium or argon carrier gas along a flow tube following the introduction of a humid air sample. These ions react in multiple collisions with water molecules, their isotopic compositions reach equilibrium and the relative magnitudes of their isotopomers are measured by a quadrupole mass spectrometer located downstream. Trace gas analysis One of the first papers reporting the use of the flowing afterglow was reported in Planet Space Sci in 1966 by Norton, Ferguson, Fehsenfeld, and Schmeltekopf. ref cite journal author Norton, RB et al. year 1966 title Ion neutral reactions in the Martian ionosphere journal Planetary and Space Science volume 14 issue 10 pages 969 978 doi 10.1016 0032 0633 66 90133 4 bibcode 1966P&SS...14..969N ref They studied ion molecule reactions pertinent ... using conventional quadrupole or tandem mass spectrometry, depending on the application. One ... ions. This problem is circumvented by implementing the Selected ion flow tube mass spectrometry ... author Newman K, Mason RS year 2006 title Organic mass spectrometry and control of fragmentation using a fast flow glow discharge ion source journal Rapid Communications in Mass Spectrometry volume 20 ... FA MS Flowing afterglow mass spectrometry Category Mass spectrometry ... Ion Flow Tube SIFT A Technique for Studying Ion Neutral Reactions journal International Journal of Mass Spectrometry and Ion Physics volume 21 pages 349 359 doi 10.1016 0020 7381 76 80133 7 ref The flowing ...   more details



  1. Liquid chromatography?mass spectrometry

    Infobox chemical analysis name Liquid chromatography mass spectrometry image caption Ion trap LCMS system acronym LCMS classification Chromatography br Mass spectrometry analytes organic molecule s br ... br Thermo Fisher Scientific br Varian, Inc. br Waters Corporation related Gas chromatography mass spectrometry hyphenated Liquid chromatography mass spectrometry LC MS , or alternatively HPLC MS is an analytical ... liquid chromatography liquid chromatography or HPLC with the mass analysis capabilities of mass spectrometry ... will decrease the sensitivity of spectrophotometric detectors. The mass spectrometry on the other hand will give improved sensitivity at flow rates of 200 L min or less. Mass spectrometry Mass spectrometry ... , Ion Trap , TOF Time of flight mass spectrometry time of Flight and Quadrupole time of flight ... is also used. ref http dx.doi.org 10.1002 mas.1280110103 Combined liquid chromatography mass spectrometry. Part III. Applications of thermospray, Patrick Arpino, Mass Spectrometry Reviews, Vol 11, 1992 .... ref Combined liquid chromatography mass spectrometry. Part I. Coupling by means of a moving belt interface, Patrick Arpino, Mass Spectrometry Reviews, Vol 8, 1989 pp 35 55 ref ref http www3.interscience.wiley.com ... to liquid separations, Kermit K. Murray, Mass Spectrometry Reviews, Vol 16, pp 283 299 ref ... analysis time. The major advantage MS has is the use of Tandem mass spectrometry tandem MS .... High speed liquid chromatography tandem mass spectrometry for the determination of drugs in biological samples. Anal Chem 58 2453 2460. ref ref Thermospray liquid chromatography mass spectrometry determination ... MS with peptide mass fingerprinting or LC MS MS Tandem mass spectrometry tandem MS to derive sequence ... G title Mass spectrometry of peptides and proteins journal Methods volume 35 issue 3 pages 211 ... 66004558 ABSTRACT LC MS applications in drug development, Mass Spectrometry Reviews, Mike S. Lee, Edward H. Kerns, Vol 18, 1999, pp 187 279 ref See also Gas chromatography mass spectrometry Capillary ...   more details



  1. Membrane-introduction mass spectrometry

    Membrane introduction mass spectrometry MIMS is a method of introducing analytes into the mass spectrometer s vacuum chamber via a semipermeable membrane semipermeable artificial membrane membrane . ref name pmid10715830 cite journal author Johnson RC, Cooks RG, Allen TM, Cisper ME, Hemberger PH title Membrane introduction mass spectrometry trends and applications journal Mass spectrometry reviews volume 19 issue 1 pages 1 37 year 2000 pmid 10715830 doi 10.1002 SICI 1098 2787 2000 19 1 1 AID MAS1 3.0.CO 2 Y ref ref name pmid17258752 cite journal author Demeestere K, Dewulf J, De Witte B, Van Langenhove H title Sample preparation for the analysis of volatile organic compounds in air and water matrices journal Journal of Chromatography A volume 1153 issue 1 2 pages 130 44 year 2007 pmid 17258752 doi 10.1016 j.chroma.2007.01.012 ref Usually a thin, gas permeable, hydrophobic membrane is used, for example polydimethylsiloxane . Samples can be almost any fluid including water, air or sometimes even solvents. The great advantage of the method of sample introduction is its simplicity. MIMS can be used to measure a variety of analytes in real time, with little or no sample preparation. MIMS is most useful for the measurement of small, non polar molecules, since molecules of this type have a greater affinity for the membrane material than the sample. See also Atmospheric pressure chemical ionization Liquid chromatography mass spectrometry References reflist Category Mass spectrometry analytical chemistry stub ...   more details



  1. Time-of-flight mass spectrometry

    Time of flight mass spectrometry TOFMS is a method of mass spectrometry in which an ion s mass to charge ... peptides of a protein . Suppose the mass of one tryptic peptide is 1000 daltons Atomic mass unit Da ... 25, 1987. ref ref A.F. Dodonov, I.V. Chernushevich and V.V. Laiko, Time of Flight Mass Spectrometry .... Hadamard transform time of flight mass spectrometry Hadamard transform TOF mass spectrometer is an instrument ... transform time of flight mass spectrometry a high speed detector for capillary format separations journal ... is a tandem mass spectrometry method where two time of flight mass spectrometers are used consecutively ... JM title Tandem time of flight mass spectrometry journal Meth. Enzymol. volume 402 issue pages ... laser desorption mass spectrometry journal Rapid Communications in Mass Spectrometry volume 5 page ... with TOF MS. Atom probe tomography also takes advantage of TOF mass spectrometry. History of the field ... References Reflist refs ref name Campana1987 cite journal title Time of Flight Mass Spectrometry ... cite journal journal Mass Spectrometry Reviews date May&ndash June 2008 volume 27 issue 3 pages 237&ndash 285 title Electron ionization time of flight mass spectrometry historical review and current ... ref Bibliography Refbegin Cite book author Cotter, Robert J. title Time of flight mass spectrometry ... Spectrometry Principles, Tools and Applications for Accurate Mass Analysis publisher Wiley location ... IFR JIC TOF MS Tutorial http www.fastcomtec.com applications mass spectrometry basics of time of flight ... Assisted Laser Desorption Ionization Time of flight Mass Spectrometry http www.hopkinsmedicine.org ... http www.kore.co.uk tutorial.htm Kore Technology Introduction to Time of Flight Mass Spectrometry Mass spectrometry DEFAULTSORT Time Of Flight Mass Spectrometry Category Mass analyzer ar .... ref Stephens, W. E., http link.aps.org abstract PR v69 p674 s2 A Pulsed Mass Spectrometer with Time ... kinetic energy as any other ion that has the same charge. The velocity of the ion depends on the mass ...   more details



  1. IONICS Mass Spectrometry Group

    name IONICS Mass Spectrometry Group company logo Image IONICS Logo.JPG thumb center 300px IONICS Mass Spectrometry Group s Corporate Logo type Private company Private traded as foundation 2001 in Concord, Ontario Canada modifies Founded entry ref name IONICS Mass Spectrometry Group Company founders ... divisions subsid slogan Go With the Flow ref name IONICS Mass Spectrometry Group Company homepage ... terminology IONICS Mass Spectrometry Group is a private corporation producing Triple quadrupole mass spectrometer s, and upgrade components. ref name IONICS Mass Spectrometry Group Company cite web title Company url http ionics.ca work IONICS Mass Spectrometry Group Corporate Website accessdate ... Us cite web title Contact url http Ionics.ca work IONICS Mass Spectrometry Corporate Website ... web title Ionics Mass Spectrometry Group wins Innovation & Technology Award url http www.ionics.ca pdf ionics wins tech award release mar 2010.pdf work IONICS Mass Spectrometry Group Corporate Website ... Founded by a group of scientists, IONICS Mass Spectrometry Group was initially located in the Toronto ... work IONICS Mass Spectrometry Group Corporate Website accessdate 29 September 2011 ... jgasms2005 posterv3.pdf work IONICS Mass Spectrometry Group Corporate Website accessdate 29 September ... work IONICS Mass Spectrometry Group Corporate Website accessdate 29 September 2011 ref 2008 As the company ... SOFTWARE url http ionics.ca pdf press release 2009 philly.pdf work Ionics Mass Spectrometry ... Asia. ref name IONICS Mass Spectrometry Group Company From its Bolton, Ontario headquarters, IONICS .... ref name IONICS Mass Spectrometry Group Company See also http ionics.ca IONICS Mass Spectrometry Group Corporate Website Mass spectrometry Triple quadrupole mass spectrometer National Research Council Canada List of mass spectrometry acronyms Tandem mass spectrometry Tandem Mass Spectrometry References Reflist Refbegin Refend Category Companies based in Ontario Category Mass spectrometry ...   more details



  1. Electron-capture mass spectrometry

    Orphan date January 2011 Electron capture mass spectrometry EC MS is a type of mass spectrometry that uses electron capture ionization ECI to form negative ion s from chemical compounds with positive electron affinity electron affinities . The approach is particularly effective for electrophile s. In contrast to electron ionization , EC MS uses low energy electrons in a gas discharge . The technique can be used with gas chromatography mass spectrometry . ref name pmid15180565 cite journal author Leis HJ, Fauler G, Rechberger GN, Windischhofer W title Electron capture mass spectrometry a powerful tool in biomedical trace level analysis journal Curr. Med. Chem. volume 11 issue 12 pages 1585 94 year 2004 month June pmid 15180565 doi url http www.bentham direct.org pages content.php?CMC 2004 00000011 00000012 0005C.SGM ref Mechanism The attachment of a low energy electron can give rise to two possible reactions for the compound, as shown below. Either the compound attaches an electron to form a Radical chemistry radical anion , math AB e to AB bullet math , or the compound fragments, resulting in electron capture dissociation ECD . ref cite journal last Giese first RW title Electron capture mass spectrometry recent advances journal Journal of Chromatography volume 892 issue 1 2 pages 329 346 publisher location year 2000 url doi 10.1016 S0021 9673 00 00364 2 pmid 11045497 accessdate ref ECD forms an anion fragment and a radical fragment math AB e to A B bullet math . Fragmentation in ECI has been studied by tandem mass spectrometry . ref name pmid10962492 cite journal author Wei J, Liu S, Fedoreyev SA, Voinov VG title A study of resonance electron capture ionization on a quadrupole tandem mass spectrometer journal Rapid Commun. Mass Spectrom. volume 14 issue 18 pages 1689 94 year 2000 pmid 10962492 doi 10.1002 1097 0231 20000930 14 18 1689 AID RCM75 3.0.CO 2 G ref See also Electron capture detector References reflist Category Ion source chemistry stub ...   more details



  1. Isotope-ratio mass spectrometry

    Infobox chemical analysis name Isotope ratio mass spectrometry image Isotope ratio ms.jpg caption Isotope ratio mass spectrometer with gas bench in foreground acronym IRMS classification mass spectrometry analytes manufacturers related Accelerator mass spectrometry hyphenated Isotope ratio mass spectrometry IRMS is a specialization of mass spectrometry , in which mass spectrometric methods are used ... mass spectrometry or infrared spectrometry? journal Isotopes in environmental and health studies ... ratio mass spectrometry ref or chemical trapping. By comparing the detected isotopic ratios to a measured ... Mean Ocean Water . Gas Source stable isotope mass spectrometry Instruments have been developed based ... isotope ratio mass spectrometry journal Mass spectrometry reviews volume 16 issue 5 pages 227 58 year ... Gas noble gas mass spectrometry A static gas mass spectrometer is one in which a gaseous sample for analysis ... isotope analysis. Solid Source radiogenic isotope mass spectrometry Several of the isotope systems ... into the source of the mass spectrometer hence thermal ionization mass spectrometry , TIMS . These methods ... plasma mass spectrometry MC ICP MS An MC ICP MS instrument is a multiple collector mass spectrometer ... MC ICP MS. Magnetic sector mass spectrometry requires a high acceleration potential in order to properly ... ICP MS. Magnetic sector mass spectrometry also requires an ion beam with a relatively small range in ion ... of carbon isotope variability in albumins by liquid flow injection isotope ratio mass spectrometry ... section date May 2008 Accelerator Mass Spectrometry AMS For isotopes occurring at extremely low levels, accelerator mass spectrometry AMS can be used. For example, the decay rate of the radioisotope sup ... thermal ionization mass spectrometry journal Anal. Chem. volume 75 issue 9 pages 1972 7 year 2003 pmid ... doi 10.1111 j.1556 4029.2006.00123.x ref See also Accelerator mass spectrometry Atom Bainbridge mass ... Modern isotope ratio mass spectrometry publisher J. Wiley location London year 1997 pages isbn ...   more details



  1. Accelerator mass spectrometry

    Infobox chemical analysis name Accelerator mass spectrometry image 1 MV accelerator mass spectrometer.jpg caption Accelerator mass spectrometer at Lawrence Livermore National Laboratory acronym AMS classification Mass spectrometry analytes Organic molecule s br Biomolecule s manufacturers related Particle accelerator hyphenated Accelerator mass spectrometry AMS differs from other forms of mass spectrometry ... mass analysis. The special strength of AMS among the mass spectrometric methods is its power to separate a rare isotope from an abundant neighboring mass abundance sensitivity , e.g. sup 14 sup C from sup 12 sup C . ref Cite book year 1997 chapter Abundance sensitivity in mass spectrometry chapterurl ... Budzikiewicz first H. last2 Grigsby first2 R. D. year 2006 title Mass spectrometry and isotopes A century of research and discussion journal Mass Spectrometry Reviews volume 25 issue 1 pages 146 157 ... stage. ref cite journal last Litherland first A. E. year 1980 title Ultrasensitive mass spectrometry ... de Laeter first J. R. year 1998 title Mass spectrometry and geochronology journal Mass Spectrometry ... dating . An accelerator mass spectrometer is required, over other forms of mass spectrometry, because ... J. S. year 2005 title Accelerator mass spectrometry for quantitative in vivo tracing journal BioTechniques ... Vogel first4 J. S. year 2005 title Neuroscience and accelerator mass spectrometry journal Journal of Mass Spectrometry volume 40 issue 2 pages 154 159 doi 10.1002 jms.734 pmid 15706618 ref In particular ... of accelerator mass spectrometry facilities Arizona Accelerator Mass Spectrometry Laboratory References ... 7503 0557 6 cite book last Tuniz first C. year 1998 title Accelerator Mass Spectrometry publisher CRC ... str Knezovich.html Biomedical Research Benefits from Counting Small Mass spectrometry Category Spectroscopy Category Mass spectrometry de Beschleuniger Massenspektrometrie it Spettrometria ... accelerated ions are usually separated by a first mass spectrometer of sector field type and enter ...   more details



  1. Mass spectrometry data format

    Use dmy dates date November 2011 Mass spectrometry is a scientific technique for measuring the mass of ions ... volume of data produced in a typical mass spectrometry experiment requires that computers be used for data storage and processing. Over the years, different manufacturers of mass spectrometers have ... to supply a standardized file format for data exchange in mass spectrometry. JCAMP DX was initially developed for infrared spectrometry. JCAMP DX is a ASCII based format and therefore not very compact ... DX V.6.00 for CHROMATOGRAPHY and MASS SPECTROMETRY HYPHENATED METHODS IUPAC Technical Note 2005 ... ref ANDI MS or netCDF The AN alytical D ata I nterchange format for Mass Spectrometry is a format for exchanging data. Many mass spectrometry software packages can read or write ANDI files. ANDI ... open representation of mass spectrometry data and its application to proteomics research journal ... released at the 2008 American Society for Mass Spectrometry Meeting. ref cite web author HUPO ... tool that converts to from various mass spectrometry formats, ref name sourceforge1 cite web url http ... to from various mass spectrometry formats The reference implementation of mzML has been provided ... ref FileConverter A command line tool that converts to from various mass spectrometry formats, ref ... for MS informatics. It offers easy access to mass spectrometry data that allows the rapid development ... module for high throughput bioinformatics on mass spectrometry data journal Bioinformatics year 2012 doi 10.1093 bioinformatics bts066 ref See also Mass spectrometry software References reflist colwidth 30em Category Bioinformatics software Category Mass spectrometry software Category Proteomics nl ... Markup Language based common file format for proteomics mass spectrometric data. ref name pmid15529173 ... 17342793 doi 10.1586 14789450.2.6.839 ref Most mass spectrometer s do not directly produce mzXML data ... format for mass spectrometer output journal Proteomics volume 8 issue 14 pages 2776 7 year 2008 pmid ...   more details



  1. Secondary ion mass spectrometry

    Infobox chemical analysis name Secondary ion mass spectrometry image IMS3F pbmf.JPG caption Cameca CAMECA IMS3f Magnetic SIMS Instrument acronym SIMS classification Mass spectrometry analytes Solid surfaces, thin films related Fast atom bombardment br Microprobe Secondary ion mass spectrometry SIMS is a technique ... Instruments of this type use pulsed primary ion sources and time of flight mass spectrometry time of flight mass spectrometers and were developed by Benninghoven, Niehus and Steffens at the University ... masses to pass through. The Time of flight mass spectrometry time of flight mass analyzer separates ... dust in situ with secondary ion mass spectrometry in 2014. ref cite journal title Chemometric evaluation of time of flight secondary ion mass spectrometry data of minerals in the frame of future ..., and H. W. Werner, Secondary Ion Mass Spectrometry Basic Concepts, Instrumental Aspects, Applications ... . Category Mass spectrometry Category Semiconductor analysis cs Secondary ion mass spectrometry de Sekund rionen ... and analyzing ejected secondary ions. These secondary ions are measured with a mass spectrometer ... ref cite journal title Ion source for mass spectrography author Herzog, R. F. K., Viehboeck ... title Ion microprobe mass analyzer doi 10.1063 1.1709314 author Liebl, H. J journal J. Appl. Phys. volume ... were based on a magnetic double focusing sector instrument sector field mass spectrometer and used ... equipped with quadrupole mass analyzer s. ref cite journal author Wittmaack, K. title Pre equilibrium variation of secondary ion yield journal Int. J. Mass Spectrom. Ion Phys. volume 17 year 1975 pages ... mass spectrometer for depth profiling design and performance evaluation journal Rev. Scient .... These secondary ions are then collected by ion lenses 5 and filtered according to atomic mass 6 , then projected ..., a secondary ion mass spectrometer consists of primary Ion Gun generating the primary Ion beam primary ... holding the sample and the secondary ion extraction lens mass analyser separating the ions according ...   more details



  1. Gas chromatography?mass spectrometry

    Image GCMS closed.jpg right 300 px Example of a GC MS instrument thumb Gas chromatography mass spectrometry GC MS is a method that combines the features of gas liquid chromatography and mass spectrometry ... Cite journal doi 10.1021 ac50164a024 title Time of Flight Mass Spectrometry and Gas Liquid Partition ... 535 ref ref Cite journal doi 10.1016 1044 0305 93 85001 E title Early gas chromatography mass spectrometry year 1993 author Gohlke, R journal Journal of the American Society for Mass Spectrometry volume ... spectrometry alone. The mass spectrometry process normally requires a very pure sample while gas chromatography ... mass spectrometry stages. GC tandem MS When a second phase of mass fragmentation is added, for example ... of specific compounds in mixtures journal Organic Mass Spectrometry year 1974 volume 9 issue 7 pages ... Mass Spectrometry with Supersonic Molecular Beams journal Journal of Mass Spectrometry year 2008 ... gas chromatography mass spectrometry. GC MS can determine compounds in urine even in minor concentration ... of sup 13 sup C sup 12 sup C ratios with an Isotope ratio mass spectrometry isotope ratio ... as ratios. See also Liquid chromatography mass spectrometry Ion mobility spectrometry mass spectrometry ... Robert P., Dr Adams title Identification of Essential Oil Components By Gas Chromatography Mass Spectrometry ... G. Larsen, Barbara Seliger title Gas chromatography and mass spectrometry a practical guide publisher ... Practical aspects of gas chromatography mass spectrometry publisher Wiley location New York year 1984 ... chromatography mass spectrometry publisher Marcel Dekker location New York, N.Y year 2001 pages isbn ... MS 05 GCMS How does it work? MeshName Gas chromatography mass spectrometry ... intro html intro.html Introduction to Mass Spectrometry chromatography Mass spectrometry DEFAULTSORT Gas Chromatography Mass Spectrometry Category Mass spectrometry Category Chromatography Category ... di massa hu G zkromatogr fia t megspektroszk pia simple Gas chromatography mass spectrometry fi Termodesorptio ...   more details



  1. List of accelerator mass spectrometry facilities

    The following list of accelerator mass spectrometry facilities sets out the research centres which employ accelerator mass spectrometry AMS . Accelerator mass spectrometry is a form of mass spectrometry that accelerates ions to extraordinarily high kinetic energies before mass analysis. Luis Walter Alvarez L.W. Alvarez and Robert Cornog of the United States first used an accelerator as a mass spectrometer in 1939 when they employed a cyclotron to demonstrate that sup 3 sup He was stable from this observation, they immediately and correctly concluded that the other mass 3 isotope tritium was radioactive. Facilities Please note that this list is not complete yet. There are about 180 AMS facilities in the world. Africa iThemba Laboratory for Accelerator Based Sciences http www.tlabs.ac.za www.tlabs.ac.za , Johannesburg , South Africa America Center for Advanced Photonics and Environmental Analysis ... Mass Spectrometry CAMS at the Lawrence Livermore National Laboratory National Ocean Sciences Accelerator Mass Spectrometer NOSAMS Facility at Woods Hole Oceanographic Institution http www.radiocarbon.com accelerator mass spectrometry.htm Beta Analytic Accelerator Mass Spectrometry Facility in Miami ... Angeles, CA NSF Arizona Accelerator Mass Spectrometry AMS Laboratory http www.ess.uci.edu ams W.M. Keck Carbon Cycle Accelerator Mass Spectrometry KCCAMS Facility at the University of California, Irvine ... accelerator mass spectrometry.htm Beta Analytic Europe in London CEREGE in Aix en Provence , France Lund Accelerator Mass Spectrometry Facility at Lund University , Sweden Ion Beam Physics ... Mass Spectrometry ... University in West Lafayette, Indiana Trace Element Accelerator Mass Spectrometer TEAMS at the Naval ... departments suerc researchthemes ams NERC Recognised Accelerator Mass Spectrometer at SUERC, Scotland ... http www.highvolteng.com AMS.html Tandetron Accelerator Mass Spectrometers highvolteng.com ...   more details



  1. Journal of the American Society for Mass Spectrometry

    Infobox Journal cover Image jasms cover.gif discipline Chemistry abbreviation J. Am. Soc. Mass Spectrom. frequency monthly history 1990 present impact 3.391 impact year 2009 website http www.springerlink.com content 1044 0305 publisher Springer Science Business Media country USA ISSN 1044 0305 The Journal of the American Society for Mass Spectrometry usually abbreviated as J. Am. Soc. Mass Spectrom. , often nicknamed JASMS , is a peer review peer reviewed scientific journal published since 1990, by Springer Science Business Media since 2011 prior to then it was published by Elsevier . The monthly journal is the official publication of the American Society for Mass Spectrometry and publishes original research papers covering all aspects of mass spectrometry. Michael L. Gross chemist Michael L. Gross Washington University in St. Louis has been Editor in Chief since inception of the journal. Associate editors are Veronica Bierbaum University of Colorado at Boulder , Jennifer Brodbelt University of Texas at Austin , Kelsey Cook National Science Foundation , Joseph Loo UCLA , Richard O Hare University of Melbourne , and Carol Robinson University of Oxford . The managing editor is Joyce Neff Washington University in St Louis . Papers are freely available one year after publication. The journal is indexed on MEDLINE . Category Delayed open access journals Category Chemistry journals Category Mass spectrometry journals Category Publications established in 1990 Category English language journals chem journal stub fr Journal of the American Society for Mass Spectrometry it Journal of the American Society for Mass Spectrometry ...   more details



  1. Pyrolysis?gas chromatography?mass spectrometry

    Infobox chemical analysis name Pyrolysis gas chromatography mass spectrometry image caption acronym PyGCMS classification Mass spectrometry analytes polymer s br biomolecule s br paint manufacturers related gas chromatography hyphenated Pyrolysis gas chromatography mass spectrometry is a method of chemical analysis in which the sample is heated to decomposition to produce smaller molecules that are separated by gas chromatography and detected using mass spectrometry . ref name pmid16531644 cite journal author Halket JM, Zaikin VG title Derivatization in mass spectrometry 7. On line derivatisation degradation journal European Journal of Mass Spectrometry volume 12 issue 1 pages 1 13 year 2006 pmid 16531644 doi 10.1255 ejms.785 ref How it works Pyrolysis is the thermal decomposition of materials in an inert atmosphere or a vacuum. The sample is put into direct contact with a platinum wire, or placed in a quartz sample tube, and rapidly heated to 600 1000 C. Depending on the application even higher temperatures are used. Three different heating techniques are used in actual pyrolyzers Isothermal furnace, inductive heating Curie Point filament , and resistive heating using platinum filaments. Large molecules cleave at their weakest points and produce smaller, more volatile fragments. These fragments can be separated by gas chromatography. Pyrolysis GC chromatograms are typically complex because a wide range of different decomposition products is formed. The data can either be used as fingerprint to prove material identity or the GC MS data is used to identify individual fragments to obtain structural information. br To increase the volatility of polar fragments, various methylating ... of aqueous liquid chromatography to pyrolysis gas chromatography and mass spectrometry for the comprehensive ... Category Mass spectrometry de Gaschromatographie mit Massenspektrometrie Kopplung fr Chromatographie ... multidimensional gas chromatography using low thermal mass column technology journal Journal ...   more details



  1. Inductively coupled plasma mass spectrometry

    Infobox chemical analysis name Inductively coupled plasma mass spectrometry image ICP MS.jpg caption ICP MS Instrument acronym ICP MS classification Mass spectrometry analytes Nuclide atomic and polyatomic ... atomic emission spectroscopy hyphenated Liquid chromatography inductively coupled plasma mass spectrometry, Gas chromatography inductively coupled plasma mass spectrometry Inductively coupled plasma mass spectrometry ICP MS is a type of mass spectrometry that is highly sensitive and capable of the determination ... electron to form a singly charged ion. Mass spectrometry Main Mass spectrometry For coupling to mass spectrometry , the ions from the plasma are extracted through a series of cones into a mass spectrometer, usually a Quadrupole mass analyzer quadrupole . The ions are separated on the basis of their mass ... mass spectrometry time of flight systems both axis of rotation axial and orthogonal accelerators have ... of analyte which is at least 2 3 orders of magnitude more sensitive than other mass spectrometry based ... of collision reaction cell technology in isotope dilution mass spectrometry journal TrAC Trends in Analytical ... for this application than the previously used Thermal Ionization Mass Spectrometry, as species ... ICP MS Mass spectrometry DEFAULTSORT Inductively Coupled Plasma Mass Spectrometry Category Scientific techniques Category Mass spectrometry Category Laboratory equipment Category Analytical chemistry ... Inductively coupled plasma mass spectrometry ... of producing ions ionization with a mass spectrometer as a method of separating and detecting ... volume of plasma. An inductively coupled plasma ICP for spectrometry is sustained in a torch that consists ... enriched standard. Other mass analyzers coupled to ICP systems include double focusing magnetic ... be analyzed. Recently When date June 2010 a new type of protein tagging reagents called metal coded ... is used for separation of MeCAT labelled proteins. Flow injection ICP MS analysis of protein ...   more details



  1. Arizona Accelerator Mass Spectrometry Laboratory

    Arizona Accelerator Mass Spectrometry Laboratory focuses on the study of cosmogenic isotope s, and in particular the study of radiocarbon , or Carbon 14 . As a laboratory, part of its aim is to function as a research center, training center, and general community resource. Its stated mission is conducting original research in cosmogenic isotopes. The AMS laboratory was established in 1981 at the University of Arizona . ref name ouraim cite web title Our Aim work Stated aims and mission statement publisher University of Arizona date September 2010 url http www.physics.arizona.edu ams about us goal.htm accessdate 2010 09 04 ref ref name home This laboratory is used primarily to provide radiocarbon measurements. Hence, coverage in research areas is multidisciplinary . Coverage of carbon dating dating objects includes general interest and scientific interest. For example, dating of the dead sea scrolls was accomplished using this method. ref name home cite web title Accelerator Mass Spectrometry Laboratory work Highlights of appointed tasks publisher University of Arizona date September 2010 url http www.physics.arizona.edu ams index.htm accessdate 2010 09 04 ref ref name time histories Cite journal last Andrews first John T. title Replication of accelerator mass spectrometry carbon 14 dates on the acid insoluble fraction of Ross Sea surface sediments journal Antarctic Journal of the United States Review 1997 volume issue NSF grants OPP 96 14287, EAR 95 08413, OPP 97 96266 page 01 publisher location year 1997 url http www.nsf.gov pubs 1999 nsf98106 98106htm nsf98106c5.html issn doi id accessdate 2010 09 04 ref Tandem accelerators Two, tandem accelerator mass spectrometry accelerators at this facility accelerate energies up to 3 million volts MeV 3 MeV . The function of these accelerators ... Mass Spectrometry Laboratory Category University of Arizona Category Accelerator Mass Spectrometry ... www.physics.arizona.edu physics research.php?page accelerator mass accessdate 2010 09 04 ref ref name ...   more details



  1. Proton-transfer-reaction mass spectrometry

    Proton transfer reaction mass spectrometry PTR MS is a very sensitive technique for online monitoring ... reaction mass spectrometry on line trace gas analysis at ppb level, Int. J. of Mass Spectrom ... connected to a drift tube in contrast to Selected ion flow tube mass spectrometry SIFT MS no mass filter is interconnected and an analyzing system quadrupole mass analyzer or time of flight mass spectrometer . Commercially available PTR MS instruments have a Response time technology response ... sub 2 sub O 691 kJ mol ref R.S. Blake, P.S. Monks, A.M. Ellis, Proton Transfer Reaction Mass Spectrometry ... of volatile organic compounds at pptv levels by means of Proton Transfer Reaction Mass Spectrometry PTR MS Medical applications, food control and environmental research, Review paper, Int. J. Mass ... are mass analyzed Quadrupole mass analyzer or Time of flight mass spectrometry Time of flight ... compounds in seawater by membrane inlet proton transfer reaction mass spectrometry. Anal. Chim. Acta ... reaction mass spectrometry for the sensitive and rapid real time detection of solid high explosives ... spectrometry, Rapid Commun. Mass Spectrom., 23, 3875 3880, 2009 . ref Extensive reviews about PTR MS and some of its applications were published in Mass Spectrometry Reviews by Joost de Gouw et al. 2007 ... Organic Compounds in the Earth s Atmosphere using Proton Transfer Reaction Mass Spectrometry, Mass ... ref R. S. Blake, P. S. Monks, A. M. Ellis Proton Transfer Reaction Mass Spectrometry. Chem. Rev., 109 ... of Breath Research, Proton Transfer Reaction Mass Spectrometry Applications in Medical Research Volume ... mass spectrometry high resolution mass spectrometer isobaric compounds can be distinguished ... of Mass Spectrometry, 286, 122 128, 2009 . ref . Switchable reagent ions Some PTR MS instruments ... ion capability PTR SRI MS , International Journal of Mass Spectrometry, 286, 32 38, 2009 . ref ... Technology Ltd Category Mass spectrometry Category Measuring instruments ...   more details



  1. Selected-ion flow-tube mass spectrometry

    File SIFT MS.png thumb Picture of SIFT MS profile 3. Selected ion flow tube mass spectrometry , SIFT MS, is a quantitative mass spectrometry technique for trace gas analysis which involves the chemical ... of Mass Spectrometry and Ion Physics 21 1976 pp349 359. ref It is a fast flow tube ion swarm method ... Selected ion flow tube mass spectrometry SIFT MS for on line trace gas analysis Smith D., pan l P. Mass Spectrometry Reviews 24 2005 pp661 700. ref The product ions and rate coefficients have ... flow tube mass spectrometry Dryahina K., Smith D., pan l P. Rapid Communications in Mass Spectrometry ... Adams N.G., Smith D. International Journal of Mass Spectrometry and Ion Physics 21 1976 pp349 ... references Selected ion flow tube mass spectrometry SIFT MS for on line trace gas analysis Smith D., pan l P. Mass Spectrometry Reviews 24 2005 pp661 700. references references Quantification of methane in humid air and exhaled breath using selected ion flow tube mass spectrometry Dryahina K., Smith D., pan l P. Rapid Communications in Mass Spectrometry 24 2010 pp1296 1304. references Category Mass spectrometry cs SIFT MS ... . Instrumentation In the selected ion flow tube mass spectrometer, SIFT MS, ions are generated ... the formed plasma, a single ionic species is selected using a Quadrupole mass analyzer quadrupole mass ..., such as their proton affinity or ionization energy . The newly formed product ions flow into the mass spectrometer chamber, which contains a second quadrupole mass filter, and an electron multiplier detector, which are used to separate the ions by their mass to charge ratios , m z, and measure the count ... . The instrument can be programmed either to scan across a range of masses to produce a mass spectrum ... mixtures of gases, such as human breath. Another key feature of SIFT MS is the upstream mass ... to distinguish between two or more compounds that react to produce ions of the same mass to charge ...   more details



  1. Static secondary-ion mass spectrometry

    Static secondary ion mass spectrometry , or static SIMS is a technique for chemical analysis including .... It is one of the two principal modes of operation of Secondary ion mass spectrometry SIMS , which is the mass spectrometry of ionized particles emitted by a solid or sometimes liquid surface ... F.G., Werner H.W., Secondary Ion Mass Spectrometry Basic Concepts, Instrumental Aspects, Applications ... to Surface Analysis by XPS and AES , Wiley. DEFAULTSORT Static Secondary Ion Mass Spectrometry Category Mass spectrometry it SIMS statico ... and analyzed by a mass spectrometer to produce a mass spectrum of a surface for a detailed chemical ... Spectrum The mass spectrum of the secondary ions emitted from the bombarded surface during SSIMS provides ... area. This is because the mass spectrum includes cluster ions as well as elemental ions. These cluster ions reflect the surface chemistry in a detailed way. Figure shows the mass spectrum obtained ..., most SSIMS was performed using Quadrupole mass analyzer . However, in mid 1980 it was realized that Time ... A., Reed N.M. Secondary Ion Mass Spectroscopy Principal and Applications , Oxford Science Publication ... the experiment 1 . Mass spectrometer Quadrupole, magnetic sector and time of flight TOF are the three mass spectrometers MS used in SIMS. For SSIMS the primary requirement is low primary ion flux density ... mass resolution and high mass range m z 10 are among its other major advantages. TOF ... in ions of different mass charge m e ratio to have different velocities. These ions then pass through a region of field free space in the flight tube, and spread out in time, with the higher mass ions arriving later at the end of the flight tube where a time sensitive detection system produces a mass ... path to offset their increased velocity, and all ions of the same mass arrive at the detector simultaneously ... No footnotes date February 2009 Reflist 1. Vickerman J.C., Brown A., Reed N.M. Secondary Ion Mass Spectroscopy ...   more details



  1. Spectrometry

    Spectrometry may refer to Ion mobility spectrometry , an analytical technique used to separate and identify ionized molecules in the gas phase based on their ion mobility in a carrier buffer gas Mass spectrometry , an analytical technique that measures the mass to charge ratio of charged particles Rutherford backscattering spectrometry , an analytical technique used to determine the structure and composition of materials by measuring the back scattering of a beam of high energy ions impinging on a sample Neutron triple axis spectrometry , a technique used in inelastic neutron scattering Spectroscopy Optical spectrometry , a technique for measuring the distribution of light across the optical spectrum, from the Ultraviolet UV spectral region to the Visible spectrum visible and Infrared spectroscopy infrared . See also Spectrometer Spectrophotometry Spectroscopy disambig ca Espectrometria ...   more details



  1. Protein fingerprinting

    Protein fingerprinting can refer to any of the several methods for identifying or differentiating proteins Peptide mass fingerprinting , a method developed in 1993 that uses protein mass spectrometry following SDS PAGE Older techniques using two dimensional chromatography and or protein electrophoresis Disambig ...   more details



  1. Protein

    resonance and mass spectrometry . Biochemistry Main Biochemistry Amino acid peptide bond File Peptide ... the separation of a large number of proteins, mass spectrometry , ref name Conrotto2008 which allows ...About a class of molecules protein as a nutrient Protein nutrient other uses pp semi indef File Myoglobin.png thumb right A representation of the 3D structure of the protein myoglobin showing colored alpha helix alpha helices . This protein was the first to have its structure solved by X ray crystallography ... folded into a globular protein globular or fibrous protein fibrous form, facilitating a biological ... . The peptide sequence sequence of amino acids in a protein is defined by the DNA sequence sequence ... archaea pyrrolysine . Shortly after or even during synthesis, the residues in a protein are often ... to form stable protein complex es. Like other biological macromolecules such as polysaccharide ... acid s from food. Through the process of digestion , animals break down ingested protein into free amino acids that are then used in metabolism. Proteins may be protein purification purified from ... made possible a number of methods to facilitate purification. Methods commonly used to study protein ... chains in a protein that ultimately determines its three dimensional structure and its chemical reactivity ... linked in the protein chain, an individual amino acid is called a residue, and the linked series of carbon, nitrogen, and oxygen atoms are known as the main chain or protein backbone. ref Murray ... structures of the peptide bond that links individual amino acids to form a protein polymer The peptide ... angle s in the peptide bond determine the local shape assumed by the protein backbone. ref Murray et al ., p. 31. ref The end of the protein with a free carboxyl group is known as the C terminus .... The words protein , polypeptide, and peptide are a little ambiguous and can overlap in meaning. Protein is generally used to refer to the complete biological molecule in a stable tertiary structure ...   more details



  1. Protein A

    April pmid 10754313 doi ref Pfam InterPro SMART PROSITE SCOP 1DEE TCDB OPM family OPM protein PDB PDB2 1dee , PDB2 1l6x Protein A is a 56 Atomic mass unit kDa MSCRAMM surface protein originally found ...Pfam box Symbol SpA Name Protein A image Protein A 1DEE 1L6X.png width caption Structure of a domain of protein A as a three helix bundle binding to the heavy variable chain of a VH3 human Fab ref name ... JB, Silverman GJ. title Crystal structure of a Staphylococcus aureus protein A domain complexed with the Fab ... month May pmid 10805799 doi pmc 25840 ref left. Minimized protein A bound to Fc fragment of Rituximab ... and phagocytosis . Protein A antibody binding Protein A binds with high affinity to human IgG1 and IgG2 as well as mouse IgG2a and IgG2b. Protein A binds with moderate affinity to human IgM ... or IgD , nor will it react to mouse IgM, IgA or IgE. The capacity of protein A to bind antibodies with such high .... The protein A used for production of antibodies in bio pharmaceuticals is most commonly bound to a stationary phase chromatography resin. Other antibody binding proteins In addition to Protein A, other immunoglobulin binding bacterial proteins such as Protein G , Protein A G and Protein L are all ... Staphylococcus aureus utilizes Protein A, along with a host of other proteins and surface factors to aid its survival and, thus, virulence. Protein A helps inhibit phagocytic engulfment and acts as an immunological disguise. Mutants of S. aureus lacking protein A are more efficiently phagocytosed ... toxin. J. Exp. Med. 2003 197 1125 1139. ref Research Recombinant Staphylococcal Protein ... form of Protein A is called MabSelect. ref http www.gelifesciences.com aptrix upp00919.nsf Content 17D93C2E6A580E57C1257628001CE677 file 18114994AE.pdf ref Protein A is often coupled to other molecules .... Protein A is often immobilized onto a solid support and used as reliable method for purifying total IgG from crude protein mixtures such as blood serum serum or ascites fluid, or coupled with one ...   more details



  1. The Mass

    About the 2000 dancehall song the 2003 New Age album The Mass album other uses Mass disambiguation Unreferenced stub auto yes date December 2009 Infobox single See Wikipedia WikiProject Songs Name The Mass Cover Artist Baby Cham from Album Wow... The Story Released Start date 2000 3 16 Format 12 inch single 12 single , CD Single Recorded 1999 Genre Dancehall Length 02 43 Label Madhouse Records Writer Dave Kelly Beckett, D. Producer Dave Kelly This single The Mass br 2000 Next single Funny Man Baby Cham song Funny Man br 2000 The Mass is the first single off the album Wow... The Story from Jamaica n dancehall artist Cham singer Baby Cham . It reached top thirty on the ARIA Charts Australian charts . DEFAULTSORT Mass, The Category 2000 songs 2000s single stub ...   more details



  1. Mass

    About the scientific concept the substance of which all physical objects consist Matter other uses Mass disambiguation Classical mechanics cTopic Fundamental concepts In physics , mass from Ancient Greek Greek lang grc wikt barley cake, lump of dough , more specifically inertial mass , can ... . In addition to this, gravitational mass can be described as a measure of magnitude of the gravitational force which is exerted by an object active gravitational mass , or experienced by an object passive gravitational force when interacting with a second object. The SI unit of mass is the kilogram kg . In everyday usage, mass is often referred to as weight , the units of which are often taken ..., however, the term weight refers to a Mass versus weight different, yet related , property of matter ... pull of the opposing body e.g. a person s weight on Earth vs on the Moon while mass is an intrinsic ..., while its mass does not. On the surface of the Earth, an object with a mass of 50  kilogram s weighs 491  Newton unit Newtons on the surface of the Moon, the same object still has a mass ... of the Earth, the weight W of an object is related to its mass m by W mg , where g is the Earth ... mass of an object determines its acceleration in the presence of an applied force. According to Newton s second law of motion , if a body of fixed mass M is subjected to a force F , its acceleration is given by F M . A body s mass also determines the degree to which it generates or is affected by a gravitational field . If a first body of mass M sub A sub is placed at a distance r from a second body of mass M sub B sub , each body experiences an attractive force F sub G sub whose magnitude ... referred to as gravitational mass. ref group note When a distinction is necessary, M is used to denote the active gravitational mass and m the passive gravitational mass. ref Repeated experiments since the 17th century have demonstrated that inertial and gravitational mass are equivalent since ...   more details




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