ICP-MS法同时测定卷烟滤嘴用丝束中的铬、镍、铜、砷和铅

Determination of Cr, Ni, Cu, As and Pb in Cigarette Filter Tow by ICP-MS

摘要: 采用HNO3/H2O2微波4步消解-电感耦合等离子体质谱法同时测定了醋酸纤维和聚丙烯纤维丝束中Cr、Ni、Cu、As、Se、Cd和Pb元素,并对第4步消解时间进行了优化。结果显示:①第4步消解的适宜条件为190℃下消解20min;②各元素的回收率在86.38%~117.2%之间,RSD < 25%,检出限25.20~245.1ng/L;③2种丝束样品中均未检出Se和Cd。

Abstract: The Cr, Ni, Cu, As, Se, Cd and Pb in AC and PP tow samples were digested by HNO3/H2O2 with four steps of different microwave intensities and durations, and then determined by ICP-MS. The duration for the fourth step of digestion was optimized. The results showed that the optimal condition for the fourth step of digestion was 190℃ for 20 minutes. The recoveries of the elements were in the range of 86.38% to 117.2% with RSD of 25% and limits of detection of < 25.20 to 245.1ng/L. Se and Cd were not detectable in the two tow samples.