湿法分解——ICP-AES测定废钯碳催化剂中的钯

Determination of Palladium in Spent Palladium Carbon Catalyst by ICP-AES

为完全分解样品，消除碳的影响，以H2S04＋HN03冒烟消除碳，甲酸还原，王水溶解，在ICP-AES选定的条件下测定废钯炭催化剂样品中钯的含量。样品加标回收率97．0%-101．6%测定0．099％-0．324％的钯含量，相对标准偏差2．55％～2．84％，方法与灼烧还原法及火试金法测定结果一致，方法简单快速，环保节约，结果准确。

In order to decomposes the sample completely and eliminate the impact of carbon, preparation of sample, carbon removed by H2SOa＋HNO3 smoking, formic acid reduction, dissolved by aqua regia. determine palladium content in the selected conditions of ICP-AES. The recovery ranged from 97.0% to 101.8%, the relative standard deviation （n=6） is less than 3%, determination result of the method and method of ignition reduction and fire assay is consistent, the method is simple and fast, environmental protection, conservation, and accurate.