Assessment of carcinogenic volatile N-nitrosamines in tobacco and in mainstream and sidestream smoke from cigarettes
摘要：
Volatile -nitrosamines were quantitatively determined in tobacco and fresh cigarette mainstream and sidestream smoke with a thermal energy analyzer. The smoke was trapped in ascorbic acid solution buffered at pH 4.5 and then extracted with dichloromethane; the organic phase was chromatographed on basic alumina and analyzed by gas-liquid chromatography with a thermal energy analyzer (sensitivity, 50 pg/injection). For positive identification the volatile nitrosamines were further enriched by distillation and chromatography and then identified by gas-liquid chromatography and mass spectrometry.
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年份：
1977
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