土层中石油烃类污染物索氏抽提流程改进及回收氯仿资源化研究  

Research on the modification of Soxhlet extraction process measuring the petrochemical hydrocarbons in polluted soils and reuse of reclaimed chloroform from the process

作　　者：章卫华[1] 李广贺[1] 邵辉煌[1] 张旭[1] 

机构地区：[1]清华大学环境科学与工程系,北京100084

出　　处：《中国环境监测》2001年第3期12-15,共4页Environmental Monitoring in China

基　　金：国家自然科学基金项目 !(4 9972 0 82 )

摘　　要：通过对土层中石油烃类污染物索氏抽提流程的改进 ,实现蒸馏氯仿的回收与再利用。实验结果表明 ,用改进索氏抽提流程测的有机物含量与传统的流程相比 ,所减少的石油烃类物质损耗占总石油物质含量的 1 0 % ;同时 ,蒸馏回收的氯仿的 70 %可以重新用于索氏抽提 ,由此产生的误差小于 1 % ,不会影响残油微生物降解试验的分析精度 。Papers implemented the reclaiming and reuse of the chloroform by ameliorating the Soxhlet extraction process for the measure of the hydrocarbons of polluted soils The experiment showed the ameliorated process, compared with the conventional process, reduced the ullage of hydrocarbons, which is about 10% of the total hydrocarbons, and 70% of the chloroform reclaimed during the distillation, can be reused in other Soxhlet extraction processes And because the deviation resulting from the reuse is less than 1%, it won't affect on the precision of the experiment of the biodegradation, which not only prevents the air pollution, but also recycles the resource

关 键 词：氯仿 挥发 蒸馏 回用 土壤污染 石油烃类 污染物 索氏抽提流程 废水处理 

分 类 号：X703[环境科学与工程—环境工程] X53