火焰原子吸收光谱法测定有机残液中的铑  

Determination of Trace Rh in Organic Residue by Flame Atomic Absorption Spectrophotometry

作　　者：韩梅[1] 程舫[1] 顾士芳[1] 崔丽钧[1] 肖光[1] 徐松云[1] 

机构地区：[1]大连理工大学基础化学实验中心,辽宁大连116024

出　　处：《光谱学与光谱分析》2003年第1期87-88,共2页Spectroscopy and Spectral Analysis

摘　　要：采用浓硝酸 ,在温度 1 30℃下 ,对含有铑的催化剂有机残液消解 1 2h ,应用火焰原子吸收分光光度法测定了残液中的痕量铑元素。铑的原子化条件为灯电流 7mA ,所用的火焰是空气 乙炔焰。同时 ,本文对有机残液的样品预处理方法进行了比较。研究表明 ,方法的回收率为 95 3 %～ 1 0 5 5 % ,相对标准偏差为 0 9%。应用本方法测定实际样品 ,结果令人满意。The catalytic organic residue contained Rh was digested with HNO3 at 130degreesC for 12 h. Trace noble metal Rh in catalytic organic residue was determined by flame atomic absorption spectrophotometry. Rh was atomized by air-acetylene flame at lamp Current of 7 mA. The methods of sample pretreatment for Rh in residue were compared in this paper. The recovery rates of this method were 95.3%-105.5% and the relative standard derivation was 0.9% The method was applied to the analysis of some practical samples and the results obtained were satisfactory.

关 键 词：火焰原子吸收光谱法 测定 有机残液 铑 催化剂 分析 

分 类 号：O643.36[理学—物理化学] O614.821[理学—化学]