GC-MS法测定水中邻苯二甲酸酯

采用气相色谱-质谱（GC-MS）联用测定水中邻苯二甲酸酯（包括邻苯二甲酸二甲酯,邻苯二甲酸二乙酯,邻苯二甲酸二正丁酯,邻苯二甲酸丁基苄基酯,邻苯二甲酸二（2-乙基己基）酯,邻苯二甲酸二正辛酯）,优化了试验条件。GC-MS选择SIM扫描方式,外标法定量,定性定量准确,线性响应良好,干扰小。邻苯二甲酸酯的方法检出限为0.002 mg/L-0.03 mg/L,平均加标回收率在94.2%-110%之间,RSD在0.4%-6.3%之间。

Determination of Phthalate Esters in Water by GC-MS

This method introduced a method on which Phthalate esters samples in water were determined by GC-MS.The Phthalate esters include dimethyl phthalate,diethyl phthalate,dibutyl phthalate,butylbenzyl phthalate,di-（2-ethylhexyl）phthalate,and dioctyl phthalate.With selected ion monitoring mode,the quality and quantity method of external standard were correct.The good linear responses were achieved and little inference.The detection limits were 0.002 ～ 0.03 mg/L,and average recoveries 94.2%-110%,RSD 0.4%-6.3%.