气质联用法测定水溶性纺织助染剂中氯化甲苯化合物

摘要

A testing method for determination of twelve chlorinated toluenes in water-soluble textile dyeing auxiliary with GC-MS was established. With ultrasonic-assisted the sample was extracted twice by n-hexane.Then the extract was analyzed with DB-17MS by the temperature programming mode of GC-MS and was tested by external standard method. The results showed that with this method satisfactory recoveries 81.9%～105.6% and method detection limits 9.8～21.6 ＊g/kg could be obtained. The method features low detection limits and good accuracy, and could be used for handling water-soluble textile dyeing auxiliary samples.%本文建立了水溶性纺织助染剂中12种氯化甲苯化合物的气相色谱-质谱（GC-MS）测定方法。采用超声萃取法,以正己烷为溶剂分两次提取待测物,用DB-17MS为检测色谱柱气质联用法程序升温方式进行测定,外标法定量。结果表明该方法对12种氯化甲苯化合物的回收率为81.9%～105.6%,方法检测限可达9.8～21.6？g/kg。该法检测限低,准确可靠,适用于水溶性纺织助染剂中氯化甲苯化合物的分析监测。