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Capillary gas chromatography of amines with ammonia as carrier gas

✍ Scribed by Abdel-Rehim, Mohamed ;Hassan, Moustapha ;Ehrsson, Hans

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
351 KB
Volume
13
Category
Article
ISSN
0935-6304

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✦ Synopsis

Abstract

The use of ammonia as a carrier gas for the chromatography of aliphatic and aromatic amines has been investigated. As compared to nitrogen, ammonia gave drastically improved peak symmetry and lower capacity factors (kβ€²) for primary and secondary amines on polar (Polyethylene glycol) and medium Polar (methylphenylcyanopropylsilicone) stationary Phases. The effect of ammonia was more Pronounced at low column temperatures. Considerably better detection limits of primary and secondary amines were obtained with ammonia as carrier gas than with nitrogen. No detrimental effects of using ammonia were observed on the gas chromatograph or on the columns over a period of about one year.

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