烟草科技2017，Vol.50Issue(9)：49-54,6.
气相色谱-质谱法测定烟草中多氯联苯
Determination of PCBs in tobacco by GC/MS
摘要
Abstract
In order to control exogenous contamination risks for raw materials used in oral tobacco products, a qualitative and quantitative analysis method for polychlorinated biphenyls(PCBs)in tobacco leaves was established. The developed method for the simultaneous determination of seven PCBs in tobacco by gas chromatography-mass spectrometry(GC-MS)was applied to test 42 domestic and imported tobacco samples. After extraction, vacuum concentration to drying, re-dissolving and purification, the tobacco powder samples were quantified by gas chromatography-mass spectrometry(GC-MS)with internal standards. The results showed that: 1)The linearity of curves of the seven PCBs'concentration-response relationship was good with the correlation coefficient range between 0.984 3-0.994 8. 2)The limit of detection and the limit of quantification were 0.22-1.07 and 0.73-3.57 ng·mL-1, respectively. The spiked recovery ranged from 70.4% to 95.5% with the intra-day and inter-day relative standard deviations no more than 4.6% and 9.2%, respectively. 3)Different amounts of the seven PCBs were detected in the 42 samples with the maximum total amount of 0.37 mg·kg-1, which was lower than the limit level of PCBs in food(≤0.5 mg·kg-1in total). This method is simple, rapid and suitable for the detection of PCBs in tobacco samples.关键词
烟草/多氯联苯(PCBs)/气相色谱-质谱(GC/MS)Key words
Tobacco/Polychlorobiphenyl(PCBs)/Gas chromatography-mass spectrometry (GC/MS)分类
轻工纺织引用本文复制引用
李鹏,沈轶,刘俊辉,曾世通,简小鹏,赵文涛,孙世豪..气相色谱-质谱法测定烟草中多氯联苯[J].烟草科技,2017,50(9):49-54,6.基金项目
中国烟草总公司新型烟草制品研制重大专项项目"口含烟烟叶原料质量评价研究"(中烟办[2015]346号). （中烟办[2015]346号）
