电感耦合等离子体原子发射光谱法测定废钌催化剂中钌

Determination of ruthenium in waste ruthenium catalysts by inductively coupled plasma atomic emission spectrometry

采用过氧化钠在800℃的高温炉中熔融样品,然后在5%(V/V)盐酸介质中,用电感耦合等离子体原子发射光谱法测定了废钌催化剂中钌含量。对样品的预处理方法和检测方法进行了研究和对比,并考察了废钌催化剂中多种金属杂质对钌检测的影响,结果表明试液中与钌等量存在的Na、Ca、Mg、Pb、Al、Co、Ni、Zn、Cd、Bi、Ag、Mn、Rh、Au、Fe等元素对测定没有干扰。用本法测定了两个含量不同的钌废料样品,钌的测定值与重量法的测定值相符。方法简便、快速,适用于钌废料和钌炭催化剂中钌的测定。

The analytic method of determining the content of ruthenium by inductively coupled plasma atomic emission speetrometry（ICP-AES） in 5G （V/V） hydrochloric acid was used, w＇ith sodium peroxide melting waste ruthenium catalysts in a 800 ℃ muffle. The methods for sample pretreatment and determination were studied and contrasted, and the interference of metallic impurities in the determining process was investigated, as well. Results showed that the equal content of Na, Ca, Mg, Pb, Al, Co, Ni, Zn, Cd, Bi, Ag, Mn, Rh, Au, Fe with ruthenium in the test solution has no interference on determination. Two waste ruthenium catalysts with different content were determined by this method, the results of which were the same as the results of gravimetric method. This method is convenient and rapid, especially suitable for determining the content of ruthenium in waste ruthenium and ruthenium on carbon.