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概述了催化极谱法测定矿石样品中铂的方法,并讨论了有效提高测定铂灵敏度的途径。实验结果表明,铂在硫酸-六次甲基四胺混合溶液中有很好的催化波,且在该底液中测定铂,其抗干扰能力强;铂的质量浓度在0.01 ng/mL～10μg/mL范围内呈线性关系。该方法对标准样品GBW 07291、GBW 07292和GBW 07293进行测试,分析结果令人满意。
The method for the determination of platinum in ore samples by catalytic polarography is summarized and the ways to improve the sensitivity of platinum determination are discussed. The experimental results show that platinum has a good catalytic wave in the sulfuric acid - hexamethylenetetramine mixed solution, and the determination of platinum in the bottom liquid has strong anti-interference ability; the mass concentration of platinum is between 0.01 ng / mL and 10 μg / mL within a linear relationship. The method of standard samples GBW 07291, GBW 07292 and GBW 07293 were tested and the results were satisfactory.