湿消解法处理塑料样品的研究

Research on the Wet Digestion Method for Plastic Sample Treatment

本文论述了利用酸消解法消解PP塑料样品,用原子吸收光谱仪测定样品溶液的铅(Pb)、镉(Cd)、铬(Cr)、汞(Hg)含量的方法,考察了不同反应设备、不同反应溶液、不同反应时间对回收率的影响,从中寻找出最佳反应条件。该方法操作简单,重复试验结果的相对标准偏差(RSD)小于5%,回收率在90～110%范围内,方法准确可靠。

PP plastic sample was digested by acid digestion method, the content of Pb, Cd, Cr, Hg in sample solution was detected by atomic adsorption spectrometer. The best reaction condition was obtained from researching different reaction equipment solution or time The operation of this method was simple, the RSD was less than 5%, the recovery was 90- 110%. The method was accurate and credible.