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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. 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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When the signal from the ion of a measured oxidized peptidc overlapped with the isotopic distribution of signal from another peptide ion. Lead recycling notwithstanding, there are still measurable deviations from co-linearity in the lead isotopic distribution of the minor ratios (vs. |
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