Abstract
This paper describes the gas-liquid chromatographic separation of mixtures of barbiturates in pure solution and in extracts of biological material. Using a special preparation of SE-30-tristearin on acid-washed Chromosorb W in a stainless steel column it is shown that successful resolution can be obtained with submicrogram amounts of the drugs. In some cases, 10 ng of barbiturates can be detected. Interference of other drugs and methods of eliminating this interference are described.
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