期刊
ENVIRONMENTAL SCIENCE & TECHNOLOGY
卷 34, 期 23, 页码 4995-5000出版社
AMER CHEMICAL SOC
DOI: 10.1021/es991064g
关键词
-
The effectiveness of the extraction conditions proposed in ASE U.S. EPA Method 3545 was evaluated for the extraction of polychlorinated biphenyls (PCBs) in Baltic Sea sediments with different sample characteristics such as organic carbon, soot carbon, sulfur, water content, and PCB concentration range. PCB concentrations determined with accelerated solvent extraction (ASE) using n-hexane/ acetone (1:1, v/v) as organic solvents were compared to Soxhlet extraction using toluene as organic solvent. The results indicated that sediments containing relatively low amounts of organic and soot carbon can be quantitatively extracted by ASE in 5 min with n-hexane/acetone (proposed in EPA Method 3545). However, for sediments with larger amounts of carbon, the total amount of PCBs present in th a sam pie might be underestimated when using n-hexane/ acetone. For these latter sediments, toluene seems to increase the extraction efficiency in ASE.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据