It is frequently used as a detector in gas chromatography.

The farm samples were tested by gas chromatography, the tests being run for several hours.

Others introduced mass spectrometers to gas chromatography in the late 1950s.

An electron capture detector is used in some gas chromatography systems.

Interpreting the results of gas chromatography on unknown compounds is difficult at best.

She said, "Our own lab found an unidentified peak on gas chromatography.

A fourth test, this time using gas chromatography, found chloroacetamide present, at 6.5 parts per million.

"But since you're taking over, I thought you should know the boy has an abnormal peak on gas chromatography.

Did you do a gas chromatography on his blood?'

Gas chromatography and mass spectrometry are the most common methods of chemical analysis.

A few companies are experimenting with high speed gas chromatography to detect bed bugs.

Other than that, she had to wait for Peter to work his magic with the gas chromatography and mass spectrograph.

'We'll say we're going to run a gas chromatography on all Malcolm's heroin.

These detect volatile compounds given off from explosives using gas chromatography.

The same year saw first successful enantiomeric separation by gas chromatography an important development as the technology was in common use at the time.

Gas chromatography and mid-infrared spectroscopy are other methods in use.

The main type of columns used in gas chromatography is a capillary column.

It doesn't sound like gas chromatography or spectroscopy are on the menu right now."

However, I did find two fresh needle marks on the arms and the gas chromatography came up with opiates.

I don't know how much you know about it," he went on, "but gas chromatography is a relatively simple and quick process.

Doping with 1-testosterone can be detected in urine samples using gas chromatography.

Esters are usually identified by gas chromatography, taking advantage of their volatility.

Gas chromatography is regularly used to describe what is inside a complex sample.

Standard addition is frequently used in atomic absorption spectroscopy and gas chromatography.

The main physical method of ethylene oxide detection is gas chromatography.