化探样品中超痕量铱的催化极谱测定  

The determination of super-trace iridium in chemical prospecting sample by catalytic polarogram method

作　　者：王君玉[1] 刘逸超[2] 

机构地区：[1]中国地质大学 [2]河南省地质调查院

出　　处：《黄金》2003年第4期47-50,共4页Gold

摘　　要：概述了化探样品中催化极谱测定超痕量铱的方法 ,并详细讨论了如何有效提高该体系测定的灵敏度。实验表明 ,铱在硫脲、碘化铵、盐酸混合底液中有很好的催化波 ,铱的测定浓度在0 0 1× 10 - 9～ 3 0× 10 - 9mol/L范围内呈线性关系。该方法测定管理样品 ,结果令人满意。The determination of super-trace iridium in chemical prospecting sample by catalytic polarogram method is overviewed.The effective ways to improve the determination sensitivity of the system are discussed.It shows from experiment that the iridium in the mixed solution of thiourea,ammonium iodide and hydrochloric acid has better catalytic wave,the determination density of iridium present linear relationship within the range of 0.01×10 -9 ～3.0×10 -9 mol/L and the determination result is satisfactory.

关 键 词：测定 化探样品 超痕量铱 催化极谱法 

分 类 号：P632[天文地球—地质矿产勘探] O657.14[天文地球—地质学]