分散液液微萃取/气相色谱-质谱法同时测定烟用添加剂中8种烷基苯类香味有害物

Journal of Instrumental Analysis(2012)

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Abstract
建立了超声溶剂提取和分散液液微萃取( DLLME)相结合的提取、净化前处理技术,采用气相色谱-质谱法分析了烟用添加剂中的黄樟素、侧柏酮、龙蒿脑、胡薄荷酮、甲基丁香酚、香豆素、6-甲基香豆素和7-甲氧基香豆素8种烷基苯类香味有害物.对分散液液微萃取溶剂及其体积、分散剂及其体积、萃取时间等条件进行了优化.在最佳实验条件下,8种有害物的线性范围为0.4 ~928 μg/L(r2≥0.998 9),检出限为0.04 ~0.24 μg/L,定量下限为0.13~0.80 μg/L,富集倍数为140~ 208倍,方法的加标回收率为90%~100%,相对标准偏差为2.4% ~6.7%.与行业推荐的测定方法相比,该方法具有灵敏度高、富集效果好、回收率高等优点.
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Key words
dispersive liquid-liquid microextraction,GC-MS,alkenylbenzenes,tobacco additives
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