单词	gas chromatography
释义	gas chromatography noun : chromatography in which the sample mixture is vaporized and injected into a stream of carrier gas (such as nitrogen or helium) moving through a column containing a stationary phase composed of a liquid or particulate solid and is separated into its component compounds according to their affinity for the stationary phase gas chromatographic adjective Example Sentences Recent Examples on the Web The instrument inside the luggage is actually performing gas chromatography-mass spectrometry (GC-MS), which is a gold-standard analytical technique to finely separate out the components of a mixture. Beth Mole, Ars Technica, 15 Apr. 2022 To test for the presence of COVID-19, the breathalyzer uses a technique known as gas chromatography gas mass-spectrometry to rapidly detect the organic compounds associated with SARS-CoV-2. Serena Coady, SELF, 19 Apr. 2022 Items were transported to the lab in a cooler in their original packaging, and then each menu item was blended into a slurry, the liquid tested for these chemicals via a technique called gas chromatography-mass spectrometry. Washington Post, 27 Oct. 2021 Items were transported to the lab in a cooler in their original packaging, and then each menu item was blended into a slurry, the liquid tested for these chemicals via a technique called gas chromatography-mass spectrometry. Laura Reiley, Anchorage Daily News, 27 Oct. 2021 The scientist verifies ambergris using a technique known as capillary gas chromatography–mass spectrometry and then Ambergris Connect issues authenticity reports to buyers. Smithsonian Magazine, 2 Sep. 2021 Sludge repository amassed, Halden’s team dove in, pulling the samples apart molecule by molecule using a gas chromatography-mass spectrometer. Megan Molteni, STAT, 17 June 2021 Using gas chromatography and mass spectrometry, the team found a ton of the usual bad smell offenders. Max G. Levy, Wired, 3 June 2021 Researchers used laboratory techniques like gas chromatography and mass spectrometry to identify 16 chemical compounds that create the enticing aroma, per Gizmodo. Elizabeth Gamillo, Smithsonian Magazine, 26 May 2021 See More Word History First Known Use 1952, in the meaning defined above Medical Definition gas chromatography noun : chromatography in which the sample mixture is vaporized and injected into a stream of carrier gas (as nitrogen or helium) moving through a column containing a stationary phase composed of a liquid or a particulate solid and is separated into its component compounds according to the affinity of the compounds for the stationary phase —abbreviation GC compare column chromatography, gas-liquid chromatography, thin-layer chromatography
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