气相色谱-电子捕获负化学电离-质谱法测定电子电气产品聚合物材料中的中链氯化石蜡  

Determination of Medium Chain Chlorinated Paraffins in Polymer Materials for Electrical and Electronic Products by GC-ECNCI-MS

作　　者：冯岸红[1] 幸苑娜[1] 叶淋泉[1] 林志惠[1] 陈泽勇[1] 

机构地区：[1]深圳市计量质量检测研究院,深圳518131

出　　处：《理化检验（化学分册）》2017年第12期1365-1369,共5页Physical Testing and Chemical Analysis(Part B:Chemical Analysis)

基　　金：广东省质量技术监督局科技项目(2014PJ03)

摘　　要：1.000 0g样品用10mL正己烷超声萃取90min,提取液用于气相色谱-电子捕获负化学电离-质谱法分析。仪器工作条件如下:进样口温度为280℃,离子源温度为180℃,甲烷气流量为2.0mL·min^(-1)。采用多元线性回归法,建立了m/z370和m/z384离子峰面积与中链氯化石蜡(MCCPs)总量的线性回归方程,该方程可对质量浓度范围为10.0~100mg·L^(-1)的MCCPs进行较准确的定量。采用此方法分析了10批次电子电气产品聚合物材料样品,其中2批次样品中检出MCCPs,其质量比分别为2 081,4 165mg·kg^(-1)。The sample（1.000 0 g）was extracted ultrasonically with 10 mL of haxane for 90 min.The extract was separated and analyzed by gas chromatography-electron capture negative chemical ionization-mass spectrometry（GC-ECNI-MS）.The optimum conditions were as follow：280 ℃ of inlet temperature,180 ℃ of ion source temperature and 2.0 mL·min^（-1） of methane flow rate.Linear regression equation between the total medium chain chlorinated paraffins（MCCPs）and peak areas of ions m/z 370,m/z 384 was established by applying the multiple linear regression calibration.The equation allowed accurate quantification of MCCPs in the range of 10.0-100 mg·L^（-1）.The proposed method was used to determine MCCPs in 10 batches of polymer materials for electrical and electronic products,and MCCPs were found in 2 batches of samples,with mass ratio of 2 081,4 165 mg·kg^（-1）,respectively.

关 键 词：气相色谱-电子捕获负化学电离-质谱法 中链氯化石蜡 电子电气产品 多元线性回归 

分 类 号：O657.63[理学—分析化学]