国外口含型无烟气烟草制品总烟碱、游离烟碱和烟草特有亚硝胺含量分析

Analysis of Total Nicotine,Free Nicotine and Tobacco-specific N-nitrosamines in Foreign Oral Smokeless Tobacco Products

采用CORESTA推荐方法测定了65种国外口含型无烟气烟草制品样品的含水率、烟碱、pH、游离烟碱和4种烟草特有亚硝胺(TSNAs)。结果表明,口含型无烟气烟草制品的各项化学指标差异显著:含水率为12.07%～55.58%;pH为5.55～8.98;以湿重计,烟碱含量为5.41～27.68 mg/g,释放游离烟碱含量为0.63～10.46 mg/g,游离烟碱释放率为7.8%～72.3%;N-亚硝基降烟碱(NNN)为0.31～17.00μg/g,4-(N-亚硝基甲胺基)-1-(3-吡啶基)-1-丁酮(NNK)为0.07～6.00μg/g,N-亚硝基新烟草碱(NAT)为0.11～6.51μg/g,N-亚硝基假木贼碱(NAB)为0.01～2.54μg/g,同一样品中4种TSNAs总含量为0.54～31.91μg/g。

The moisture content,nicotine,pH,free nicotine,and 4 tobacco-specific nitrosamines（TSNAs） in 65 samples of foreign oral smokeless tobacco products were analyzed with CORESTA recommended methods.The results showed that there was wide discrepancy among these samples;moisture content and pH ranged from 12.07% to 55.58% and 5.55 to 8.98,respectively;on the basis of total wet weight,the contents of nicotine and free nicotine were in the range of 5.41-27.68 and 0.63-10.46 mg/g,respectively;the release rate of free nicotine was 7.8%-72.3%;the total content of 4 TSNAs was 0.54-31.91 μg/g,the contents of NNN,NNK,NAT,and NAB were 0.31-17.00,0.07-6.00,0.11-6.51,and 0.01-2.54 μg/g,respectively.