研究了汽车废催化剂浸出渣火法富集物锍相的溶解方法,结果表明,先用盐酸处理试样后,加入王水溶解,能使贵金属锍化物溶解完全、贵金属溶出率高.采用DbDO萃取光度法测定Pd,DbDO-SnCl2萃取光度法测定Pt,MBT-SnBr2萃取光度法测定Rh,能够有效消除大量贱金属的干扰.此方法测定的相对误差为-1.4%～+2.3%,加标回收率Pt为96.0%～105.5%,Pd为97.3%～104.5%,Rh为95.7%～104.8%,此方法已用于实际样品分析,结果满意.
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