GAS CHROMATOGRAPHY Definition & Meaning

gas chromatography

[ gas kroh-muh-tog-ruh-fee ]

Phonetic (Standard)IPA

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

noun

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 Also calledgas-liquid chromatography

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�y��vlog History and Origins

Origin of gas chromatography¹

First recorded in 1950–55

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Example Sentences

Examples have not been reviewed.

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

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"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.

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In these samples, using the gas chromatography technique, coupled with high-resolution mass spectrometry, 78 metabolites were identified and their changes were studied, mostly related to energy production and oxidative stress.

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After letting the chemicals interact in the chamber for up to 2 days, the team took samples and injected them into a gas chromatography mass spectrometer.

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First, gas chromatography and mass spectrometry were used to identify and measure the presence of geosmin and other compounds in both the water and fish.

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