气质联用仪测定电子电气产品中多环芳烃

建立了以甲苯溶剂超声波震荡提取、离心机分离萃取液、气相色谱-质谱联用仪测定电子电气产品中16种多环芳烃组分的方法,萃取条件为:用甲苯溶剂在60℃超声波震荡60 min,外标法定量。各组分的浓度在10～500ng/mL范围内具有良好的线性,线性相关系数r2大于0.994,检出限为0.05～0.30 mg/kg。方法的加标回收率为80%～120%,测定结果的相对标准偏差小于5%。

DETERMINATION OF 16 PAHs IN ELECTRICAL AND ELECTRONIC PRODUCTS BY GC -MS

A method of gas chromatography - mass spectrometry（ GC - MS） was developed for the determination of 16 polycyclie aromatic hydrocarbons （ 16 PAHs） in polymer and rubber of electrical and electronic products. The analytes was extracted with toluene from sample with ultrasonic technique for 60 min at 60℃ bath, separated by centrifuge, and analyzed by GC - MS with extermal standard quantitative method. The experimental results showed that the linear range of 16 PAHs was 10 -500 ng/mL with correlation coefficients r^2 more than 0. 994. The detection limits were 0.05 - 0.30 mg/kg. The reeoveris of the 16 PAHs were in the range of 80% - 120% with relative standard deviation less than 5%.