密闭消解-ICP-AES法测定硅铁合金中的铂、钯、铑量  

Determination of platinum,palladium and rhodium in ferrosilicon alloy by closed digestion and ICP-AES

作　　者：杨晓滔 鲁瑞智 杨梅英 李顺兵 马媛 曾荷峰 付仕梅 YANG Xiaotao;LU Ruizhi;YANG Meiying;LI Shunbing;MA Yuan;ZENG Hefeng;FU Shimei(Sino-Platinum Metals Testing Technology(Yunnan)Co.Ltd.,Sino-Platinum Metals Co.Ltd.,Kunming 650106,China)

机构地区：[1]贵研铂业股份有限公司贵研检测(昆明)有限公司,昆明650106

出　　处：《贵金属》2023年第S01期134-137,共4页Precious Metals

摘　　要：研究了硅铁合金富集物样品溶解条件及铁、硅对铂、钯、铑测定的干扰情况。在聚四氟乙烯消化罐中,用盐酸-双氧水(15+3)将样品于150℃恒温密闭消解8 h以上,用ICP-AES测定铂、钯、铑含量。结果表明,在选定的溶解和测定条件下,铂、钯、铑测定相对标准偏差<2%,加标回收率为97%~102%。与碱熔-碲共沉淀-ICP-AES法进行对比,结果一致性好。可满足硅铁合金富集物中铂、钯、铑的测定要求。The dissolution conditions of ferrosilicon alloy enrichment samples and the interference of Fe and Si on the determination of Pt,Pd and Rh were studied.The contents of Pt,Pd and Rh were determined by ICP-AES after the sample was dissolced by hydrogen peroxide hydrochloric acid(15+3)in a polytetrafluoroethylene digestion tank at 150℃for more than 8 h.The results showed that the relative standard deviations of platinum,palladium and rhodium were less than 2%.and recoveries were 97%~102%,under the conditions of dissolution and determination conditions.Compared with alkali solution-Te co-precipitation-ICP-AES method,the results are in good agreement.It can meet the determination requirements of Pt,Pd and Rh in ferrosilicon alloy enrichment.

关 键 词：分析化学 贵金属 硅铁合金 溶解 发射光谱法 

分 类 号：O657.63[理学—分析化学]