摘要
本文采用气相色谱-热能分析仪(GC-TEA)对卷烟主流烟气中主要4种烟草特有N-亚硝胺(TSNAs)进行了分析;优化了 前处理过程及仪器分析条件;建立了使用经抗坏血酸处理的玻璃纤维滤片收集卷烟主流烟气,用二氯甲烷萃取卷烟主流烟气中的 TSNAs,萃取液经碱性氧化铝层析柱纯化,TSNAs通过GC-TEA定量检测的分析方法;并对国内外较有代表性的98种卷烟样品 中的TSNAs进行了系统的分析测定。结果表明,混合型卷烟主流烟气中TSNAs的含量显著高于烤烟型卷烟;国外混合型卷烟中 NNK的含量高于国内混合型卷烟。这些研究结果为制定我国卷烟烟气中TSNAs含量限量标准、建立技术壁垒提供了可靠的技术 基础。
Method was developed for the determination of tobacco specific nitrosamines(TSNAs) in cigarette smoke with GC-TEA. The procedure involved trapping mainstream smoke on a Cambridge filter treated with solution of ascorbic acid, extraction of TSNAs from the filter with dichloromethane, evaporating the dichloromethane and clean-up on a basic alumina chromatography column. The sample was analyzed with gas chromatography/thermal energy analyzer and quantified by an internal standard procedure. All responses were linear and recoveries were more than 87%. The method was simple, precise and can determine more than 1ng/cig of TSNAs in cigarette smoke. All together 98 domestic and foreign cigarettes were analyzed. Results indicated that the TSNAs yields in mainstream smoke of American-blended cigarettes are much higher than those of virginia type cigarettes and the NNK yields in mainstream smoke of foreign blended cigarettes are higher than those of domestic blended cigarettes.
出处
《中国烟草学报》
EI
CAS
CSCD
2004年第5期8-15,42,共9页
Acta Tabacaria Sinica
基金
国家经济贸易委员会
国家烟草专卖局资助
关键词
卷烟
主流烟气
N-亚硝胺
GC—TEA
Cigarettes Mainstream smoke Tobacco specific N-nitrosamines GC-TEA
