活性炭富集、比色法测定冶金浸出液中低含量的铂、钯

Determination of the low content of Pt and Pd in metallurgy lixivium by active carbon concentration and colorimetric method

先采用活性炭富集冶金浸出液中低含量的 Pt,Pd,再用比色法测定 Pt,Pd.活性炭吸附时盐酸介质浓度为 1.2 mol/ L .直径 31mm、高 15 0 mm的活性炭柱完全吸附 Pt和 Pd的容量分别为2 0 0 μg和 15 0 μg.用该法测定 Pt,Pd结果稳定 ,回收率在 95 %以上 ,相对标准偏差小于 2 .0 0 % .

This paper reports a new method to determine low assay Pt and Pd in lixivium of metallurgy by active carbon concentraton and colorimetry. HCl medium concentration is 1.2 mol/L during active carbon adsorption. Active carbon column which is 31 mm in diameter and 150 mm high can adsorb completely 200 μg Pt and 150 μg Pd. This method provides a high stability, with the recovery over 95% and relative standard deviation less than 2.00%.