动态反应池电感耦合等离子体质谱法同时测定彩色卷烟纸中7种重金属

Determination of Heavy Elements in Color Cigarette Paper by DRC-ICP-MS

采用微波消解前处理样品,建立动态反应池电感耦合等离子体质谱法同时测定彩色卷烟纸中的Cr、Ni、As、Se、Cd、Hg和Pb7种重金属含量。该方法以钇(Y)作为内标补偿基体效应,采用动态反应池模式消除Cr、Ni、Se的质谱干扰,用茶叶标准物质对方法准确性进行校正。该方法相对标准偏差均小于10%、回收率为86.6%—120.9%、检出限为2.94—70.05ng/L,该方法操作简单、分析速度快、灵敏度高、准确度好,能快速、准确测定彩色卷烟纸中重金属。

After color cigarette paper samples were digested with microwave digestion, the Cr, Ni, As, Se,Cd,Hg and Pb were determined by DRC-ICP-MS. Y was added as internal standard to eliminate the matrix interferences and dynamic reaction cell （DRC） mode was used to eliminate the interferences of Cr,Ni and Se. Tea standard reference material was analyzed for the verification of the accuracy of the method. The relative standard deviations （RSD）〈10% with standard recoveries of these elements were in the range of 86. 6%-120. 9%, and the limits of detection were 2. 94-- 70. 05ng/L. The method is simple,quick and accurate for the determination of Cr,Ni,As,Se,Cd,Hg and Pb in color cigarette paper.