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研究了萃取分离碘化钾分光光度法测定负载型钯催化剂中微量钯元素含量的方法.找到了测定范围内的最佳吸收波长、pH值、试剂用量及测定时间,作出了工作曲线.确定了符合比尔定律的线性范围和测试液浓度下限(10~(-5)～10~(-6)mol/l).其测定的相对误差为2%～5%.
The extraction and separation of potassium iodide spectrophotometry was studied for the determination of trace amounts of palladium in supported palladium catalyst.It was found that the optimum absorption wavelength, pH value, reagent amount and determination time were within the range of measurement, The linear range of the law and the lower limit of the concentration of the test solution (10 ~ (-5) ~ 10 ~ (-6) mol / l), the relative error of the determination of 2% to 5%.