ICP-MS法同时测定卷烟纸中元素铬、镍、铜、砷、硒、镉、铅

Simultaneous Determination of Cr,Ni,Cu,As,Se,Cd and Pb in Cigarette Paper by ICP-MS

采用微波消解前处理样品,电感耦合等离子体质谱检测,同时测定了卷烟纸中Cr、Ni、Cu、As、Se、Cd、Pb的7种元素,测定范围在0.012～2.160μg/g之间。方法的回收率为92.1%～111.9%,检出限为25.2～245.1ng/L,相对标准偏差除Se、Cd>10%外,其它元素均<4%。分析了5种国外卷烟纸和9种国内卷烟纸中7种元素的含量,统计结果显示,国内外14种卷烟纸7种元素含量除Cr、Pb外均差异显著;国内卷烟纸中Ni、Cu、Se含量差异显著,而国外卷烟纸中7种元素含量均没有显著差异。

The Cr, Ni, Cu, As, Se, Cd, Pb in cigarette paper samples were determined by ICP-MS after these samples were digested with microwave digestion. The contents of these elements were from 0. 012μg/g to 2. 160μg/g. The relative standard deviations（RSD） for Se and Cd were higher than 10% , and that for the other elements were less than 4%. The recoveries of the 7 elements were from 92.1% to 111.9%, and the limits of detection were from 25.2 to 245.1 ng/L. Five kinds of foreign cigarette paper and 9 kinds of domestic cigarette paper were analyzed. Except for Cr, Pb, the difference of the contents of other elements in the 14 samples were significant ; the difference of the Ni, Cu, and Se contents in the domestic cigarette papers were significant ; the difference of the contents of all 7 elements in foreign cigarette paper were not significant.