摘要
Abstract
A chemical analysis method for simultaneously determining platinum,palladium,rhodium,iridium,ruthenium,gold,and silver in inert materials enriched with multiple precious metals is studied.The samples are subjected to grinding,calcination,hydrogen reduction,and microwave digestion to enhance their activity and improve acid leaching rate.The mixed standard solution of platinum,palladium,rhodium,iridium,ruthenium,gold,and silver is prepared using the standard addition method,and the suitable spectral lines are selected,and the standard curve is established using Inductively Coupled Plasma-Optical Emission Spectroscopy(ICP-OES),and the precision and accuracy of the method are also evaluated.The results show that the relative standard deviations of platinum,palladium,rhodium,and gold are 0.2%～0.7%,while the relative standard deviations of iridium,ruthenium,and silver are 0.8%～1.7%,and the recovery rate of spiked samples is 97.7%～101.4%.This method has strong operability and high precision,and is suitable for chemical analysis of high content and various precious metal enrichment materials.关键词
化学分析/贵金属/氢还原/微波消解/电感耦合等离子体发射光谱仪(ICP-OES)Key words
chemical analysis/precious metals/hydrogen reduction/microwave digestion/Inductively Coupled Plasma-Optical Emission Spectrometer(ICP-OES)分类
化学化工
