摘要
采用同时蒸馏萃取法提取水样中的邻苯二甲酸二甲酯、邻苯二甲酸二乙酯、邻苯二甲酸二丁酯、邻苯二甲酸丁基苄基酯、邻苯二甲酸二正辛酯、邻苯二甲酸二（2-乙基己基）酯6种邻苯二甲酸酯，用GC—MS进行定性和定量分析。对pH值、盐度和提取时间等影响因素进行优化。当pH值为2．0，NaCl加入量为5．0g/L和提取时间为2．5h时，目标化合物具有较好的回收率。优化条件下6种邻苯二甲酸酯的样品加标回收率为98％～105％，相对标准偏差为1.8％～5．6％，方法检出限为8．0～200．0ng／L。方法成功应用于城市污水中该类化合物的监测。
Six kinds of phthalates, such as di-methyl phthalate, di-ethyl phthalate, di-butyl phthalate, butyl benzyl phthalate, di-n-octyl phthalate and di （2-ethylhexyl） phthalate in wastewater were extracted by simultaneous distillation extraction method （SDE） and determined by gas chromatography tandem mass spectrometry （ GC - MS）. Extraction parameters including pH, salinity and extraction time were optimized. A good recovery of phthalates was obtained by adding 5 g/L NaCl and using extraction time of 2.5 h in pH 2.0. Under the optimal conditions, the spiked recoveries of target compounds were in the range of 98% - 105% with relative standard deviation of 1.8% -5.6%. Limits of detection varied from 8.0 ng/L to 200. 0 ng/L. This method had merits of lower background, good reproducibility, and was successfully applied in the determination of phthalates in influent of Gaobeidian wastewater treatment plant.
出处
《分析测试学报》
CAS
CSCD
北大核心
2009年第12期1419-1423,共5页
Journal of Instrumental Analysis
基金
国家863高科技资助项目(2002AA601120)
国家自然科学基金资助项目(50378089)
关键词
同时蒸馏萃取
污水
邻苯二甲酸酯
测定
simultaneous distillation extraction
wastewater
phthalate
determination
