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将浓度范围为ppb到几个ppm的铂、钯、金预富集在银熔珠上,然后溶解于碱性氰化溶液中,用钒缓冲剂校正贵金属之间的干扰,用原子吸收光谱法能满意地加以测定。预富集在金熔珠中的银、铂、钯、铑也可在相同介质中测定,其中铑回收率偏低现象与最终溶液的介质无关,而与灰吹时可能形成铅铑氧化物及含有铅和铑的酸不溶性絮片体导致铑的损失有关。
Platinum, palladium and gold in a concentration range of ppb up to a few ppm are pre-enriched in silver melt beads and then dissolved in an alkaline cyanide solution. The vanadium buffer is used to correct the interference between the precious metals. The atomic absorption spectrometry Can be measured satisfactorily. Silver, platinum, palladium and rhodium pre-enriched in gold beads can also be measured in the same medium, with a low recovery of rhodium which is independent of the medium of the final solution and which may form lead and rhodium oxides with lead and Rhodium acid insoluble flakes lead to the loss of rhodium.