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Definition of Mass spectrometry

Mass spectrometry: A process used to identify chemicals in a substance by their mass and charge. Mass spectrometers are instruments that measure mass and charge of molecules. A mass spectrometer also can determine how much of a compound is present in a mixture. Also known as mass spectroscopy. See also: Tandem mass spectrometry.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=25328
Last Editorial Review: 10/8/2012

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