快速测定彩色卷烟纸与接装纸中六价铬的连续流动分析方法

Rapid Determination of Hexavalent Chromium in Colorful Cigarette Paper and Tipping Paper by Continuous Flow Analytical Method

通过对连续流动分析仪进样杯的改进,设计了去除彩色卷烟纸和接装纸中色素的快速固相萃取方法,该法无需转移样品,大大简化了样品前处理过程,具有操作简便、灵敏度高、检测速度快、检测自动化等优点。据此建立了测定彩色卷烟纸与接装纸中六价铬的连续流动分析法,方法检出限为0. 85μg/L,定量下限为2. 5μg/L;在3个加标水平下,方法回收率为88. 5%～97. 3%;日内相对标准偏差和日间相对标准偏差均小于4. 0%。采用烟草行业标准方法对分析结果进行验证,测定结果和标准方法无显著差异。所建立的方法可满足彩色卷烟纸和接装纸中六价铬快速测定的需求。

A continuous flow analytical method with rapid solid phase extraction was developed for the determination of hexavalent chromium in colorful cigarette paper and tipping paper.The pigments in colorful cigarette paper and tipping paper were removed by a rapid solid phase extraction,which improved the sample cups for continuous flow analytical system.The developed method greatly simplified the sample pretreatment process with no need of sample transferation,effectively overcoming the shortcomings of traditional methods,such as more pretreatment steps,cumbersome operation and low detection efficiency,etc.Furthermore,the method has the advantages of simple operation,high sensitivity,rapid detection,automation of detection,etc.The detection limit and the quantitation limit of the method was 0.85μgL and 2.5μgL,respectively.The recoveries for hexavalent chromium at three spiked levels were in the range of 88.5%-97.3%.The intra-day and inter-day relative standard deviations were below 4.0%.The results of this method were agreed with those of the Chinese tobacco standard method.The presented method could be successfully used in the rapid determination of hexavalent chromium in colorful cigarette paper and tipping paper.