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本文提出以三正辛胺(TNOA)作固定相,x-5吸附树脂作担体,利用不同浓度盐酸将铅与钢中其它八种干扰离子分离。在pH4.5～5.5以二甲酚橙作显色剂,试剂为参比;过柱淋洗液为参比底液测定铅的含量。测定合成样中(取1/10淋洗液检测)10μg铅回收率为98.5%,变动系数为2.6%,含铅量为0.172%的标钢的相对误差为0.581%,变动系数为1.16%。其它标钢及分析样品的结果均较满意。方法快速,简便。
In this paper, we use TNOA as the stationary phase and x-5 adsorbent as the support, and separate Pb and other eight interference ions from steel by using different concentrations of hydrochloric acid. At pH 4.5 ~ 5.5, xylenol orange was used as reagent and reagent as reference. The eluent of column was used as the reference solution to determine the content of lead. The relative standard deviation of the 10 μg lead recovery was 98.5%, the coefficient of variation was 2.6%, and the lead content was 0.172%. The relative error was 0.581% and the coefficient of variation was 1.16%. Other standard steel and analysis of the sample results are satisfactory. The method is quick and easy