火焰原子吸收光谱法测定催化剂中钯含量

Determination of Palladium Content in Catalyst with Flame Atomic Absorption Spectrometry

提出了用空气－ 乙炔火焰原子吸收光谱测定分子筛和氧化铝基催化剂中钯含量的方法。考察了各种类型分子筛和氧化铝基催化剂样品的溶解条件，考察了无机酸和２０ 种常见金属离子的干扰情况。平行测定六份试样的相对标准偏差小于１６６ ％ ，其加标回收率为９７５ ％ ～１０３１ ％ 。

A method for determining palladium content in catalysts supported on molecular sieve and aluminium oxide with air-acetylene flame atomic absorption spectrometry is presented in this paper.The dissolution conditions of various molecular sieve and aluminium oxide based catalyst samples as well as interference conditions of inorganic acids and twenty common metallic ions were inspected.The relative standard deviation of parallel determination on six samples is lower than 1 66%,the recoveries are 97 5%～103 1%.