固相微萃取气相色谱-质谱法测定塑料浸泡液中己二酸二(2-乙基己基)酯

Determination of Di(2-ethyl hexyl)Adipate in Immersed Plastic Solutions with Solid-phase Microextraction and Gas Chromatography-Mass Spectrometry

采用固相微萃取技术和气相色谱 -质谱法 ,以己二酸二(1_丁基戊基)酯为内标 ,测定塑料浸泡液中己二酸二(2_乙基己基)酯 ,考察了盐效应、萃取温度、萃取时间和热解吸时间等因素对方法灵敏度的影响 ;方法简便、准确、灵敏度高 ;该法对己二酸二(2_乙基己基)酯的检出限为0.05μg/L(S/N=3) ;回收率为90%～94% ,相对标准偏差为5.52 %。

Di(2-ethyl hexyl)adipate in immersed plastic solutions was determined by solid-phase microextraction(SPME)coupled with gas chromatography-mass spectrometry.The operating conditions of SPME such as the extraction temperature,salt effect,extraction and desorption time have been studied.Bis(1-butyl pentyl)adipate was selected as the internal standard.The developed method was simple and sensitive.The detection limit,reˉcovery and relative standard deviation(RSD)were0.0534μg·L -1 ,90%～94%and5.52%,respectively.