What is gas chromatography and liquid chromatography? Gas chromatography is a chromatographic method that uses gas as a mobile phase. The sample flows through the gas system and is gasified before ...

THE application of gas-liquid partition chromatography to the microanalytical separation of steroids has been recognized for some time as an attainable goal. The chief barrier to practical advances in ...

Gas chromatography (GC) is used for the analytical separation of volatile substances in the gaseous phase. This chromatographic technique is widely used in various fields of research and industrial ...

Isotope dilution is used to determine the quantity of a chemical substance in a sample. In this method, isotopically enriched material is added to a sample which leads to a "dilution" of the standard.

Thin-layer chromatography (TLC) was widely used in the 1960s and 1970s for pesticide residue analysis, but only to a limited extent since gas–liquid chromatography (GLC) and high performance liquid ...