chromatography

Using high pressure liquid 'chromatography' , the alkaloids can be purified and crystallized.

If the stationary phase is solid, the separation process is called adsorption 'chromatography' .

Both blood and urine screening tests use thin layer 'chromatography' to separate the amino acids present.

Metabolites of gylcolysis and the citrate cycle were measured by ion 'chromatography' coupled to mass spectrometry (IC-MS).

Amino acid analyses were carried out by ion exchange 'chromatography' on sulphonated polystyrene resin linked to divinyl benzene.

In the confirmatory test, the drugs in the urine sample are isolated on a small 'chromatographic' column, eluted with an organic solvent, and injected into the gas chromatograph-mass spectrometer.

Molecular fossils are recovered and studied using 'chromatographic' techniques, mass spectrometry, and spectrophotometry.

Modern methods for measuring molecular weight include 'chromatographic' methods and mass spectrometry.

During this time he developed a simple 'chromatographic' assay for imidazole compounds accumulating in histidine-requiring Neurospora mutants, which allowed him to deduce much of the histidine biosynthetic pathway.

Once the structure of an organic species has been identified, the presence of the molecule in other samples can be detected by using spectroscopic patterns or 'chromatographic' characteristics of the compound.