QuEChERS-GC/MS检测地表水中5种常见塑化剂  

Determination of Five Common Plasticizing Agents in Surface Water by QuEChERS –GC/MS

作　　者：叶欣[1] 

机构地区：[1]广东省环境监测中心,广东广州510308

出　　处：《广东化工》2014年第9期207-208,221,共3页Guangdong Chemical Industry

摘　　要：建立了一种地表水中5种常见邻苯二甲酸酯类塑化剂的QuEChERS净化、气相色谱-质谱联用法（GC-MS）的分析测定方法.样品经QuEChERS（PSA＋Mg2SO4）脱水除杂后,加入叔丁基甲醚-乙腈提取,GC-MS法测定,外标法定量.5种塑化剂在10～1000 μg/L范围内线性良好（r＞ 0.998）,方法最低检出限（LOD）为0.10 ～ 0.18 mg/kg,方法定量下限（LOQ）在0.3 ～ 0.7 mg/kg之间,2个加标水平的回收率为97.1％～107.4％,相对标准偏差（RsD,n=6）小于8％.该方法具有净化效果好、定量准确的特点,适用于地表水中多种邻苯二甲酸酯类塑化剂的快速检测.A method was established for the determination of 5 phthalic acid ester type plasticizing agents in surface water by gas chromatograph - mass spectrometry （GC-MS） after QuEChERS （Quick, Easy, Cheap, Rugged, and Safe） cleanup. The samples were dehydrated and purified by QuEChERS （PSA＋Mg2SO4）, then extracted with tea-butyl methyl ether - acetonitrile. The ultimate solution was detected and quantified by GC-MS under selected ion monitoring mode and qualified in external standard method. All of the 5 plasticizing agents were good in linear relationship between l0 and 1000 μg/L （r 〉 0.998）. The limits of detection of the method （LODs） of target compounds were ranged from 0.10 to 0.18 mg/kg, the limits of qualification of the method （LOQs） were varied from 0.3 to 0.7 mg/kg, the mean recoveries were ranged from 97.1 to 107.4 % with the relative standard deviations （RSDs） less than 8 %. This method was suitable for the identification and quantification of 5 PAEs in surface water due to its simplicity and accurate.

关 键 词：塑化剂 邻苯二甲酸酯 地表水 QUECHERS 气相色谱-质谱联用法 

分 类 号：O65[理学—分析化学]