OALib Journal期刊
气相色谱测定沉积物中多氯联苯的样品处理方法研究
, PP. 40-44
Keywords: 沉积物 ,多氯联苯 ,密闭微波萃取 ,超声波萃取 ,索氏提取 ,浓硫酸净化 ,Florisil ,小柱净化 ,气相色谱(ECD)
Abstract:
通过比较密闭微波萃取、超声波萃取、索氏提取3种方法对沉积物中多氯联苯(PCBs)提取效率,对比浓硫酸和Florisil小柱两种净化方式的净化效果,在实验基础上建立了密闭微波萃取-Florisil小柱净化-气相色谱(ECD)测定沉积物中多氯联苯的分析方法,加标质量比为0.2ng/g时,其相对标准偏差(RSD)为2.19%～8.71%,回收率为77.3%～94.6%,检出限为0.027~0.064ng/g。采用该方法对威海湾养殖区沉积物中PCBs进行了监测,结果表明本方法适用于海洋沉积物样品中PCBs的测定。
References
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