What does GCMS mean in Unclassified?
This page is about the meanings of the acronym/abbreviation/shorthand GCMS in the Miscellaneous field in general and in the Unclassified terminology in particular.
Gas chromatography–mass spectrometry
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Definition
What does GCMS mean?
- Gas chromatography–mass spectrometry
- Gas chromatography–mass spectrometry (GC-MS) is an analytical method that combines the features of gas-chromatography and mass spectrometry to identify different substances within a test sample. Applications of GC-MS include drug detection, fire investigation, environmental analysis, explosives investigation, and identification of unknown samples, including that of material samples obtained from planet Mars during probe missions as early as the 1970s. GC-MS can also be used in airport security to detect substances in luggage or on human beings. Additionally, it can identify trace elements in materials that were previously thought to have disintegrated beyond identification. Like liquid chromatography–mass spectrometry, it allows analysis and detection even of tiny amounts of a substance.GC-MS has been regarded as a "gold standard" for forensic substance identification because it is used to perform a 100% specific test, which positively identifies the presence of a particular substance. A nonspecific test merely indicates that any of several in a category of substances is present. Although a nonspecific test could statistically suggest the identity of the substance, this could lead to false positive identification. However, the high temperatures (300°C) used in the GC-MS injection port (and oven) can result in thermal degradation of injected molecules, thus resulting in the measurement of degradation products instead of the actual molecule(s) of interest.
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"GCMS." Abbreviations.com. STANDS4 LLC, 2024. Web. 23 Apr. 2024. <https://www.abbreviations.com/term/1610684>.
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