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mass spectrometry |
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mass spectrometryor mass spectroscopyAnalytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph uses photographic or other nonelectrical means; either device is a mass spectroscope. The process is widely used to measure masses and relative abundances of different isotopes, to analyze products of a separation by liquid or gas chromatography, to test vacuum integrity in high-vacuum equipment, and to measure the geological age of minerals. mass spectrometry [′mas spek′träm·ə·trē] (analytical chemistry) An analytical technique for identification of chemical structures, determination of mixtures, and quantitative elemental analysis, based on application of the mass spectrometer. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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| Drawing on 20 years of experience in developing innovative mass spectrometry tools for life science research, Applied Biosystems/MDS SCIEX developed a patented method for high-throughput quantitation of small molecules using MALDI and multiple-reaction-monitoring on a triple quadrupole mass analyzer. The NanoFrontier([R]) LC/MS platform is a hybrid system that combines the unparalleled separation of a nanoLC with the high sensitivity of a linear ion trap and the high mass accuracy and resolution of a time-of-flight mass analyzer. Nanoliquid chromatography-mass spectrometry of oligosaccharides employing graphitized carbon chromatography on microchip with a high-accuracy mass analyzer. |
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