表面活性剂对土壤中多溴联苯醚的溶出效应  

Solubilization of PBDEs from contaminated soil by surfactants

作　　者：解清杰[1] 叶丹[1] 赵如金[1] 姚一凡[1] 白戈[2] 

机构地区：[1]江苏大学环境与安全工程学院,江苏镇江212013 [2]中国石油天然气管道工程有限公司,河北廊坊065000

出　　处：《江苏大学学报（自然科学版）》2015年第1期99-102,113,共5页Journal of Jiangsu University：Natural Science Edition

基　　金：江苏省科技支撑计划项目(BE2011745);国家博士后基金资助项目(2011M500871);江苏省高校水处理技术与材料协同创新中心项目

摘　　要：研究了2种非离子表面活性剂(Tween 80和Triton X-100)、2种阴离子表面活性剂(SDS和SDBS)及其组合对土壤中BDE-15的溶出效应,考察了不同质量浓度Na Cl溶液对表面活性剂溶出BDE-15的促进作用.研究结果表明:对于单一表面活性剂,质量浓度大于临界胶束质量浓度时对BDE-15的溶出效果明显,非离子表面活性剂溶出效果优于阴离子表面活性剂;非离子/阴离子混合表面活性剂在单一表面活性剂基础上进一步提高了BDE-15的表观溶解度,且混合体系的溶出作用随非离子比例先增大后减小,在非离子与阴离子质量比为7∶3时具有最大溶出能力;添加一定质量浓度Na Cl溶液可明显提高混合表面活性剂对BDE-15的溶出效应.Solubilization effects of PBDEs from contaminated soil by two anionic surfactants （Tween 80 and Triton X-100） , two nonionic surfactants （SDS and SDBS） and their combinations were investigated. The solubilization enhancement of NaC1 solution concentration on the surfactants to BDE-15 was also stu- died. The results show that the dosages of single surfactants in excess of their critical micelle concentra- tions can dramatically enhance the solubilization effects of BDE-15, and nonionic surfactants exhi-bite higher solubilization ability than that of anionic surfactants. Anionic-nonionic mixed surfactants exhibite synergistic solubilization, and the solubilizing capacity is increased with the quantity of nonionic surfac- tant with the maximum value at the mass ratio of 7 ： 3 for nonionic to anionic surfactant. The solubiliza- tion abilities of mixed surfactants can be increased obviously by adding NaC1 solution.

关 键 词：表面活性剂 多溴联苯醚 溶出 土壤 无机盐 

分 类 号：X53[环境科学与工程—环境工程]