土壤中总石油烃测定——3种前处理方法的对比  

Three pretreatment methods of determination of total petroleum hydrocarbon in soil

作　　者：段旭[1] 李慧慧[1] 杨柳晨 田凯 Duan Xu;Li Hui-hui;Yang Liu-chen;Tian Kai(Xi’an Testing and Quality Supervision Center for Geological and Mineral Products,The Ministry of Land and Resource,Xi’an,Shaanxi 710054,China)

机构地区：[1]国土资源部西安矿产资源监督检测中心

出　　处：《福建分析测试》2019年第3期47-50,共4页Fujian Analysis & Testing

基　　金：全国土壤污染详查贵州福建等10省质量监控样制备及质量监督检查(121201105000168509)项目资助

摘　　要：文章通过设计试验,分别采用振荡提取法,超声波提取法和快速溶剂萃取法对土壤中总石油烃进行前处理。通过提取率试验,结果表明,快速溶剂萃取法的提取效率最高。通过对快速溶剂萃取-气相色谱法测定土壤中总石油烃进一步实验条件优化,得出丙酮:二氯甲烷为1:1(体积比)时,对土壤中总石油烃的提取效率优于丙酮:二氯甲烷为1:1(体积比)时,并且采用丙酮:正己烷为1:1(体积比)溶液浸提时循环萃取两次即可达到最大提取效率。In this paper,the total petroleum hydrocarbon in soil was pretreated by oscillating extraction,ultrasonic extraction and rapid solvent extraction respectively. The results of extraction rate test showed that the extraction efficiency of rapid solvent extraction was the highest. By optimizing the experimental conditions of accelerated solvent extraction-gas chromatography for determination of total petroleum hydrocarbon in soil,it was concluded that acetone:n-hexane of 1:1(volume), total petroleum hydrocarbons in the soil of the extraction efficiency is better than that of acetone,methylene chloride of 1:1 (volume),and using acetone:n-hexane of 1:1(volume)in solution leaching cycle extraction twice can achieve maximum extraction efficiency.

关 键 词：土壤石油烃 振荡提取 超声波提取 快速溶剂萃取 

分 类 号：O657.71[理学—分析化学]