响应曲面法优化土壤中PAHs的快速萃取条件  

Optimization of rapid extraction technique for PAHs in soils based on response surface plot

作　　者：李鱼[1] 杜显元[1] 张琛[1] 刘建林[1] 李兴春 

机构地区：[1]华北电力大学能源与环境研究院,北京102206 [2]中国石油安全环保技术研究院,北京100083

出　　处：《广东农业科学》2011年第23期132-135,共4页Guangdong Agricultural Sciences

基　　金：国家"十一五"科技支撑计划项目(2008BAC43B01)

摘　　要：采用中心复合设计对土壤中多环芳烃(PAHs)的超声辅助-分散液液微萃取-上浮溶剂固化前处理(UAE/DLLME/SFO)条件进行设计,通过响应曲面法对处理条件进行优化,确定最优条件为萃取剂十二醇体积52.4μL、分散剂甲醇体积1.08mL、土壤质量0.54 g、盐效应NaCl含量3.1%、超声时间3.1 min、超声功率59 kW;除屈(CHR)外,PAHs的萃取回收率范围在40.91%～94.91%,相对偏差范围1.07%～7.87%。The condition of the ultrasound-assisted dispersive liquid-liquid micro-extraction method based on solidification of floating organic drop （UAE/DLLME/SFO） technique for PAHs in soils were designed by central composite design, and optimized by the response surface plot, The ideal conditions were extractant （dodecanol） volume 52.4 uL, enmlsifier （methanol） volume 1.08 mL, weight of the soil 0.54 g, salt effect （contain of NaCl） 3.1%, ultrasonic, time 3.1 min, ultrasonic power 59 kW. The optimized results of the recoveries were 40.91%-94.91% except Chrysene （9.12%）, with the relative standard deviation （RSD） of 1.07%- 7.87%%.

关 键 词：土壤 多环芳烃 快速萃取方法 中心复合设计 响应曲面 

分 类 号：X132[环境科学与工程—环境科学]