固相流体热萃取-GC/MS分析土壤中氯苯类有机污染物  

Extraction and determination of the chlorobenzene from the soil with solid-luid extractor and GC-MS

作　　者：郎印海[1] 蒋新[1] Martens D 卞永荣[1] 

机构地区：[1]中国科学院南京土壤研究所 [2]德国国家环境与健康中心生态化学研究所,慕尼黑85764

出　　处：《分析试验室》2003年第6期64-67,共4页Chinese Journal of Analysis Laboratory

基　　金：中科院知识创新工程重要方向项目(KZCXZ 401);中国海洋大学引进人才科研启动基金资助项目

摘　　要：选用不同配比的正己烷与丙酮混合液、乙腈作为提取溶剂,应用固相流体热萃取仪对土壤中的氯苯类有机物进行提取分离,用气相色谱 质谱进行测定。结果表明:仪器工作条件为提取温度120℃,冷却温度为30℃时,正己烷与丙酮混合提取效果明显优于乙腈。方法线性关系良好,相关系数高于0.99,回收率大于80%,相对标准偏差小于5%,氯苯类物质检测限为2ng/g。Extraction of chlorobenzene compounds from soil samples using the FexIKA200seriessolidfluid extractor with the organic solvents, such as the mixture of hexane and acetone was described. The extracts were then analyzed by GCMS. Under the heatting temperature of 120 ℃ and cooling temperature of 30 ℃, the extraction efficient with the mixture of hexane and acetone was better than acetonitrile. The response had a better linear relationship with correlative coefficient of 0.99, the recovery of higher than 80% and the relative standard deviation of lower than 5%. The result showed that the detection limit of chlorobenzenes is 2.0 ng/g.

关 键 词：土壤污染 氯苯类有机污染 固相流体热萃取 气相色谱-质谱联用技术 

分 类 号：X131.3[环境科学与工程—环境科学]