碱熔—催化极谱法直接测定矿石中微量铂

来源期刊：黄金2011年第2期

论文作者：王君玉 李志伟 韩敏 程祎

文章页码：63 - 65

关键词：催化极谱法； 矿石； 微量铂； 直接测定

Key words：catalytic polarography； ore； trace platinum； direct determination

摘    要：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。

Abstract: This paper summarized the determination method of trace platinum in ore samples by catalytic polarography and discussed the effective ways to improve the determination sensitivity of the system in detail.The experiment shows that platinum has good catalytic wave in the mixed solution of sulphuric acid and hexamethylenetetramine.The interference-free feature to measure platinum in this base solution is strong.The determination density of platinum presents linear relationship within the range of 0.01 ng/mL-10 μg/mL and the determine results of standard materials GBW 07291,GBW 07292 and GBW 07293 are satisfactory.