研究结果表明:用ICP—MS可以同时测定聚合氯化铝中的Al₂O₃及As、Mn、Hg、Pb、Cd5种元素的含量。测试样品(100倍稀释固体聚合氯化铝)中Al₂O₃、As、Mn、Hg、Pb、Cd的测定结果分别为:0.30%、1.87^μg/L、95.4^μg/L、46.0ng/L、23.3^μg/L、574ng/L;测定的准确度分别为930%、109%、944%、883%、980%、886%。ICP—MS法具有10^-12～10^-6级多元素同时分析、测定快速、样品前处理简单、干扰少、省事、省力等无可比拟的优点。

A method for the determination of Al₂O₃ and 5 elements Al 、As 、Mn 、Hg 、Pb 、Cd in poly aluminium chloride by inductively coupled plasma mass spectrometer (ICP —MS)has been established.They found Al₂O₃ and these 5 elements in polyaluminium chloride could be simultaneously determined by ICP —MS.The contents of Al₂O₃ and As 、Mn 、Hg 、Pb 、Cd in test sample (100 times dilution)are 0.30 %,1.87^μg/ L,95.4^μg/L,46.0 ng/L,23.3 ^μg/ L,574 ng/L respectively,and the accuracies of this test are 93.0 %,109 %,94.4 %,88.3 %,98.0 %,88.6 % respectively.