锑试金富集-ICP-AES法测定冶金富集渣中的铱  

Determination of Iridium in Metallurgical Enriched Slag by ICP-AES with Antimony Fire Assaying Concentration

作　　者：李小玲[1] 林海山[1] 王津[1] 王芳[1] 

机构地区：[1]广州有色金属研究院分析测试研究中心,广州510650

出　　处：《贵金属》2013年第3期63-65,共3页Precious Metals

摘　　要：研究了用锑作捕集剂富集铱的火试金法，此法分为捕集和灰吹两部分。当样品同含有氧化锑、碳酸钠、碳酸钾、硼砂和面粉的熔剂混合，在950℃熔融时，铱被捕集在熔融的锑中。然后灰吹此锑合金可得到含铱的试金合粒。结果表明，锑试金与ICP—AES法结合，能准确测定冶金富集渣中的铱。铱的回收率96．35％～98．93％，相对标准偏差小于3％。方法简便、快速，准确。The fire assay is studied with antimony as a collector for enrichment of iridium. The method is divided into trapping and ash blowing. When the sample is melted at 950℃ with a mixture containing flour antimony oxide, sodium carbonate, potassium carbonate, borax and flour, the iridium is trapped in a molten antimony. Then ash blowing the antimony alloy can be obtained an assay bead with iridium. The results showed, antimony assaying method combined with ICP-AES, can determine iridium in metallurgical enriched slag accurately. The standard recovery is 96.35%-98.93%, the relative standard deviation is less than 3%. The operation of the method is simple, rapid and accurate.

关 键 词：分析化学 锑试金法 铱 ICP-AES 

分 类 号：O652.6[理学—分析化学] O657.31[理学—化学]