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.
出处
《环境污染与防治》
CAS
CSCD
北大核心
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)
关键词
固相萃取
衍生
气质联用
内分泌干扰物
Solid phase extraction Derivation GC/MS Endocrine disrupters
