湿法消解-电感耦合等离子体原子发射光谱(ICP-AES)法测定含铑废催化剂冶金废水中铑

摘 要：建立了硫酸、过氧化氢湿法消解、ICP-AES测定铑派克洗水铑的含量的分析方法。确定了硫酸碳化有机物，过氧化氢溶解煮沸，氢氟酸除硅，于4mol/L盐酸体系，碲共沉淀富集铑，10%盐酸介质，电感耦合等离子体发射光谱仪测定铑量。在选定条件下，测定含铑有机物洗水中0.0003 g/L～0.010 g/L的铑，相对标准偏差（RSD，n=7）和加标回收率分别为：铑0.545%～2.91%和99.62%%～100.55%。。方法准确、快速、简便，测定结果与火试金富集分析方法结果吻合。

Determination of Rhodium content in Rhodium parker wash water by wet digestion ICP-AES

A method is established for the determination of rhodium in rhodium parker washing water by ICP-AES with sulfuric acid and hydrogen peroxide digestion. Determination of sulphuric acid carbonized organic matter, hydrogen peroxide dissolved boiling, hydrofluoric acid to remove silicon, in 4mol/L hydrochloric acid system, tellurium coprecipitate enrichment rhodium, 10% hydrochloric acid medium, inductively coupled plasma emission spectrometer rhodium determination. The relative standard deviation (RSD, n=7) and standard recoveries of rhodium 0.545%-2.91% and 99.62%-100.55% in rhodium-containing organic matter washing water were determined under selected conditions. The method is accurate, rapid and simple, and the results are consistent with those of gold enrichment analysis by fire assay.