提出了新的辛酸铑催化剂消解方法，重点研究了消解法的条件，比较了几种分解法及其铑含量测定的方法。结果表明：使用聚四氟乙烯消解罐，于160℃，12 mL HNO3-3 mL H2O2消解4 h，能完全消解0.1~0.2 g 样品。所用消解方法操作简便，Rh 不损失。采用硝酸六氨合钴重量法测定26.30%的铑含量，相对标准偏差0.099%。方法测定结果准确、精密。
A new digestion method of octanoate dimer catalyst was introduced, the conditions of digestion methods were emphatically studied. The different digestion processes and dissolution methods were compared. The results showed that 0.1~0.2 g Rh octanoate dimer sample could be digested completely with 12 mL HNO3 and 3 mL H2O2 at 160℃ in a PTFE jar for 4 h. The operation of the digestion method was easy without of the Rh loss. The gravimetry with nitrate cobaltic hexamine was used to determinate the rhodium content of 26.30%, and the RSD was 0.099%. This method is accuracy and precision compared with other methods.
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