【作者】 毕鸿亮； 张浩原； 孙翠香； 饶勇； 苏流坤；

【Author】 BI Hong-Liang 1 ZHANG Hao-Yuan 1 SUN Cui-Xiang1 RAO Yong1 SU Liu-Kun2 (1Guangdong Key Laboratory of Agricultural Environment Pllution Integrated Control,Cuangdong Institute of Eco- Enviroment and Soil Science,Gongzhou 510650,P.R.China 2 China National Analytical Center Guangzhou 510650 P.R.China)

【机构】 广东省生态环境与土壤研究所广东省农业环境综合治理重点实验室； 中国广州分析测试中心；

【摘要】 多环芳烃(Polycyclicaromatichydrocarbons,简写为PAHs)是最早被发现的也是数量较大、分布较广的一类致癌物。目前对蔬菜中PAHs的研究的瓶颈是缺少简单快速的实验方法。本文采用正己烷:丙酮混合溶剂进行索氏提取,提取液经KOH皂化,硅胶-氧化铝层析柱净化后,用GC-MS对蔬菜中的PAHs进行检测.其方法线性良好(R2>0.998),检测限较低(<0.04μg/kg),回收率稳定(平均值为74.7-82.2%,相对标准偏差为1.1-14.6%),是测定绿色食品蔬菜中PAHs的较好方法.对于保障食品安全具有重要意义.更多还原

【Abstract】 PAHs was a kind of carcinogenic substance which was wild spread and had a great mount of them which was first be found in 1930. The absence of a suitable method with simple and fast to determinate PAHs in vegetables making a bottleneck effort to research PAHs in green food vegetables. Extracted with acetone: n-hexane(1:1/V:V) in Soxhlet extraction method, cleanup in KOH saponifying using silica- aluminum oxide chromatography to clean-up again, then determinate PAHs with GC-MS. This method had a good linearity(R2>0.998), lower detect limit (<0.04μg/kg) and a stable recovery rate (average value was 74.7-82.2% with RSD range from 1.1% to 14.6%), was a suitable method to determinate PAHs of green food vegetables, making a important sense to food security.更多还原