电感耦合等离子体质谱法快速测定烟用接装纸中砷、铅、镉、铬、镍、汞的研究

Determination of arsenic,lead,cadmium,chromium,nickel,and mercury in tipping paper by inductively coupled plasma mass spectrometry

建立了电感耦合等离子体质谱法测定烟用接装纸中砷、铅、镉、铬、镍、汞含量的方法,并采用该方法测定了25个接装纸样品中的砷、铅、镉、铬、镍、汞含量。结果表明:①砷、铅、镉、铬、镍、汞的平均回收率在97.9%～101.6%之间;日内重复性变异系数<2%,日间重复性变异系数<5%;检出限分别为0.001mg/kg,0.002mg/kg,0.008mg/kg,0.004mg/kg,0.007mg/kg,0.016mg/kg。②所测25个接装纸样品中,7个样品超过砷的限量标准1mg/kg,2个样品超过铅的限量标准5mg/kg,镉、铬、镍、汞的含量全部低于其限量标准。

Method of determinating content of arsenic, lead, cadmium, chromium, nickel, and mercury in tipping paper by inductively coupled plasma mass spectrometry was established and applied in 25 samples of tipping paper. Results indicated that： ①recovery was from 97.9% to 101.6%, RSD of intra-day repeatability was less than 2%, RSD of inter-day repeatability was less than 5%, and the detection limit were 0.001 mg/kg, 0.002 mg/kg, 0.008 mg/kg, 0.004 mg/kg, 0.007 mg/kg, and 0.016 mg/kg.. ② Among the 25 samples, content of arsenic of 7 samples was over the limited standard of 1 mg/kg, content of lead of 2 samples was over the limited standard of 1 mg/kg, and content of cadmium, chromium, nickel, and mercury was below the limited standard.