gas chromatography

American

[gas kroh-muh-tog-ruh-fee] / ˈgæs ˌkroʊ məˈtɒg rə fi /

noun

Chemistry.

chromatography in which a substance is converted into vapor and mixed with a gaseous element, as nitrogen, then separated and quantified by preferential adsorption by a solid or liquid element.

gas chromatography British

noun

Also called: gas-liquid chromatography. a technique for analysing a mixture of volatile substances in which the mixture is carried by an inert gas through a column packed with a selective adsorbent and a detector records on a moving strip the conductivity of the gas leaving the tube. Peaks on the resulting graph indicate the presence of a particular component

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Etymology

Origin of gas chromatography

First recorded in 1950–55

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Using two-dimensional gas chromatography with high-resolution mass spectrometry, they detected more than 900 chemical signatures, representing both known and previously unidentified compounds.

From Science Daily

They used radiocarbon dating to determine age and applied gas chromatography -- mass spectrometry to identify the caulking's chemical makeup.

From Science Daily

Gas chromatography‒mass spectrometry testing revealed detection limits ranging from 0.006 to 0.035 µg/kg and quantification limits between 0.019 and 0.133 µg/kg.

From Science Daily

The researchers used a technique called gas chromatography to separate the different smells inside the sarcophagus that combined to make its scent.

From BBC

"In comparison to modern food-testing methods, like high-performance liquid chromatography, gas chromatography, mass spectrometry, atomic and molecular spectroscopy, and nuclear magnetic resonance spectroscopy, biosensors like our sensor offer superior advantages in time, portability, high sensitivity, and selectivity," said author Ngo Thi Hong Le.

From Science Daily

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023