LLE/GC-MS/MS法同时检测饮用水中4种塑化剂  

LLE/GC-MS/MS for Simultaneous Determination of Four Plasticizers in Drinking Water

作　　者：郭风巧 桂萍[1] 邬晶晶 魏锦程[1] 徐至澄 李萌萌[1] GUO Feng-qiao;GUI Ping;WU Jing-jing;WEI Jin-cheng;XU Zhi-cheng;LI Meng-meng(China Academy of Urban Planning&Design,Beijing 100044,China)

机构地区：[1]中国城市规划设计研究院,北京100044

出　　处：《中国给水排水》2022年第12期22-27,共6页China Water & Wastewater

基　　金：国家水体污染控制与治理科技重大专项(2014ZX07402001)。

摘　　要：建立了同时测定饮用水中4种塑化剂的液液萃取/气相色谱-串联质谱(LLE/GC-MS/MS)检测方法。采用2 mL的正己烷萃取水样后直接上机检测,可避免环境中的塑化剂引入检测过程,克服了检测背景的影响,操作简单、环保。实验室间比对结果表明,对4种塑化剂(DEP、DBP、DOA、DEHP)的测定下限范围为0.084~0.680μg/L,采用水源水、出厂水、管网水、纯水水样得到的加标回收率范围为63.3%~145%,测定精密度为1.1%~32%。该方法可同时检测《生活饮用水卫生标准》(GB 5749—2022)中所规定的全部4种塑化剂,可提高饮用水监管工作中塑化剂检测的工作效率。A liquid-liquid extraction and gas chromatography-tandem mass spectrometry(LLE/GC-MS/MS)detection method for simultaneous determination of four plasticizers was established.The water samples were extracted with 2 mL n-hexane and detected directly on the instrument.It avoided the introduction of the plasticizer in environment into the detection process,overcame the influence of detection background on the detection results,and had the advantages of simple operation and environmental protection.The results of the interlaboratory comparison showed that MQL of the four plasticizers(DEP、DBP、DOA、DEHP)was in the range of 0.084-0.680μg/L,the recoveries of source water,product water,pipe water and pure water were in the range of 63.3%-145%,and the precision was in the range of 1.1%-32%.The method can simultaneously detect all the four plasticizers specified in Standards for Drinking Water Quality(GB 5749-2022),which improves the plasticizer detection efficiency in drinking water supervision.

关 键 词：塑化剂 液液萃取/气相色谱-串联质谱法 内标法 

分 类 号：TU991[建筑科学—市政工程]