水中微量弱极性内分泌干扰物测定方法的研究  

Measurement of trace level low polar endocrine disruptors in water

作　　者：程爱华[1] 王磊[1] 史新斌[1] 张睿[1] 张莉[1] 王志盈[1] 

机构地区：[1]西安建筑科技大学环境与市政工程学院

出　　处：《环境污染与防治》2007年第2期134-137,共4页Environmental Pollution & Control

基　　金：国家自然科学基金资助项目(No50578131);陕西省自然科学基金资助项目(No2005E240);霍英东教育基金高等院校青年教师优选资助课题(No94003)

摘　　要：使用ENVI^TM Chrom P固相萃取小柱、双（三甲基硅烷基）三氟乙酰胺（BSTFA）衍生剂及气质联机，系统研究了水中弱极性内分泌干扰物（EDCs）的测定方法。通过正交试验，得到最佳固相萃取条件为：水样流速5mL／min，洗脱剂为二氯甲烷，洗脱速率0．5mL／min，洗脱剂体积6mL。最佳衍生化条件为：BSTFA100μL，60℃，反应时间30min。结果表明，双酚A、五氯酚、2，4-二氯苯酚、4-壬基酚、雌二醇、雌三醇、雌酮、炔雌二醇的回收率在82．4％～101．9％，检出限为0．01～0．06μg／L。Measurements of 8 low polar endocrine disruptors （EDCs） present in water at trace levels were accomplished by solid phase extraction, chemical derivation and GC/MS. The results of an orthogonal design measurement program show that the best conditions for solid phase extraction were： eluting solvent dichloromethane, eluting rate 0. 5 mL/min, amount of eluting solvent 6 mL, and flow rate 5 mL/min The concentrated endocrine chemicals were chemically derived by 100 μL BSTFA at 60℃ for 30 min These compounds were finally identified and quantified by GC/MS. The recovery factor for the 8 EDCs ranged 82. 4-101.9% with a detection limit of 0.01-0.06μg/L.

关 键 词：固相萃取 衍生 气质联用 内分泌干扰物 

分 类 号：X502[环境科学与工程—环境工程]