湿法消解-ICP-MS法测定烟用接装纸中的二氧化钛

摘要

为确定烟用接装纸中二氧化钛的含量，建立了湿法消解-电感耦合等离子体质谱法（ICP-MS）测定烟用接装纸中二氧化钛的方法。结果表明，在0.1~200μg/L（以 Ti 计，下同）范围内，标准工作曲线的相关系数为1；加标回收率90.95%~101.66%；日内重复性变异系数低于1%，日间重复性变异系数低于5%；仪器检出限为0.02475μg/L，方法检出限为0.716μg/L，定量限为2.388μg/L。该方法具有检出限低，准确度高，精密度好，简便快速的特点，可以用于烟用接装纸样品中二氧化钛含量的快速测定。%Method of determining the content of titanium dioxide in tipping paper by wet digestion ICP-MS was established. The results indicated that the correlation coefficient of the standard working curve was 1 within the concentration 0.1-200μg/L, the recovery rate was from 90.95%to 101.66%, RSD of intra-day repeatability was less than 1%, and RSD of inter-day repeatability was less than 5%. The instrumental detection limit and the methodological detection limit were 0.02475 μg/L and 0.716 μg/L, respectively, and the quantitation limit was 2.388μg/L. This method has the advantage of low detection limit, high accuracy, fine precision with simplicity and rapidity. It is effective to determine the content of titanium dioxide in tipping paper.