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Ir(Ⅲ)-二溴硝基偶氮氯膦-高碘酸钾催化分光光度法测定微量铱
Catalytic spectrophotometric determination of iridium in Ir(Ⅲ)-potassium periodate-dibromo-nitro-chlorophsphonazo system
【摘要】 在硫酸介质中铱对高碘酸钾氧化二溴硝基偶氮氯膦的褪色反应有明显的催化作用.研究了该褪色反 应的最佳反应条件及微量铱的测定方法.其检出限为0.2 μg·10mL-1,铱含量在0.4-2.5μg·10mL-1范围内线性 关系良好.该方法已成功用于合成试样中铱含量的测定.
【Abstract】 A spectrophotometric method has been developed for the determination of Ir, based on their catalytic effect on potassium periodate oxidation of dibromo-nitro-chlorphosphonazo in H2SO4 medium. The optium. The optium conditions of the reaction have been determined. The determination limits was 0.4 - 2.5μg/10ml. The method has been applied to determine ruthenium in ore with satisfactory results.
【关键词】 二溴硝基偶氮氯磷;
铱;
高碘酸钾;
催化分光光度分析;
【Key words】 dibromo-chlorophosphonazo; potassium periodate; ruthenium; catalytic spectrophotomatric;
【Key words】 dibromo-chlorophosphonazo; potassium periodate; ruthenium; catalytic spectrophotomatric;
- 【文献出处】 商丘师范学院学报 ,Journal of Shangqiu Teachers College , 编辑部邮箱 ,2003年02期
- 【分类号】O657.3
- 【被引频次】5
- 【下载频次】26