气相色谱—质谱法测定非织造卫生用纺织品中的三丁基锡

Determination of tributyltin in nonwoven hygiene products by GC/MS

采用添加二乙基二硫代氨基甲酸钠三水化合物的稀乙醇溶液超声提取样品和衍生化等样品前处理方法,并结合气相色谱—质谱联用仪技术,建立了非织造卫生用纺织品中三丁基锡含量的定性定量测定方法。研究表明,该测试方法的回收率在97.9%～102.4%之间,相对标准偏差低于6%,检测限为0.03 mg/kg,可较好地应用于非织造卫生用纺织品中三丁基锡的分析测定。

GC/MS method has been developed for the determination of tributyhin in nonwoven hygiene products, the sample was first extracted with a dilute solution of sodium diethyldithiocarbamate in ethanol, after addition of buffer to the extract, and then derivatized with sodiumtetraethylborate. The derivative was determined by GC/MS in scan mode selective ion mode. The average recovery was in the range from 97.9% - 102.4%, and the RSD was below 6%, the detection limit was 0.03 mg/kg. The proposed method has been applied to the determination of tributyltin in nonwoven hygiene products.