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K E Rasmussen

Publications and source records attributed to K E Rasmussen.

76 records · Page 5Linked to original sources
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Techniques for the detection and identification of amphetamines and amphetamine-like substances.

This paper reviews analytical techniques for the detection and identification of amphetamines and amphetamine-like substances in non-biological samples. It shows the wide range of methods available, from simple testing procedures to the use of the most powerful instruments available in analytical chemistry. The following techniques are discussed: colour tests, microcrystal tests, ultraviolet spectrophotometry, fluorescence spectrometry, infra-red and Raman spectrophotometry, thin-layer chromatography, gas chromatography and high performance liquid chromatography.

Amphetamines↗
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Leuckart-specific impurities in amphetamine and methamphetamine seized in Norway.

Samples of 28 amphetamine and 7 methamphetamine seizures, taken in Norway from 1975 to 1982, were examined. The amphetamine and methamphetamine contents varied from 9 to 99 per cent and from 9 to 72 per cent respectively. Impurities originating from the synthesis of the illicit samples were identified by gas chromatography combined with mass spectrometry. Special attention was paid to "Leuckart-specific" impurities, which could indicate that the Leuckart method of amphetamine and methamphetamine synthesis had been used. N-formyl-methamphetamine, a Leuckart-specific compound, was identified in all the investigated samples of methamphetamine seized in Norway. The Leuckart-specific impurities, 4-methyl-5-phenyl-pyrimidine and N-formyl-amphetamine, were identified in 79 per cent of the amphetamine samples.

Amphetamine↗