A convenient method to obtain preparative samples by glc

Abstract

A simple device to collect samples directly from a gas chromatograph relies on a disposable pipet.

Gas chromatography

“…A few novel applications of preparative-scale gas chromatography include the separation of 14N2 and 15N2 (141) and CH4-CH3D mixtures (251,695), the resolution of the optical isomers of 3,3-dimethyl-2-butanol as the A-trifluoroacetyl-l-alanyl esters (49) and the diastereoisomers of 2-alkanol esters of L(+) mandelic acid (216), the separation of milligram amounts of 5a-steranes and triterpanes isolated from Green River oil shale (346), and as a clean-up procedure in toxicology (634) • Trapping. Efficient collection of GC eluents from preparative columns have been designed which utilize large volumes (957), disposable pipets (200), microliter syringes (467), glass capillary tubes (525), and condensors (981). Van Dyke (950) described a trap for collecting air and moisture sensitive compounds.…”

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