钌(Ⅲ)—二溴硝基偶氮氯膦—高碘酸钾催化分光光度法测定痕量钌  

Catalytic Spectrophotometric Determination of Ruthenium in Ruthenium(Ⅲ) -Potassium Periodate-Dibromo-nitro-chlorophosphonazo System

作　　者：刘锡林[1] 谢建成[1] 李欣[1] 

机构地区：[1]甘肃联合大学理工学院,甘肃兰州730000

出　　处：《甘肃教育学院学报（自然科学版）》2002年第2期58-60,共3页Journal of Gansu Education College(Natural Science Edition)

摘　　要：在H2 SO4 介质中钌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 .本文研究了该褪色反应的最佳条件及用于痕量钌的测定方法 .其检出限为 0 .0 2 μg·1 0mL- 1,钌含量在0 .0 2～ 0 .2 5 μg·1 0mL- 1范围内线性关系良好 .该方法已成功用于贵金属精矿和钌合成样中钌含量的测定 .A spectrophotometric method has been developed for the determination of Ruthdnium,based on their catalytic effect on potassium periodate oxidation of dibromo nitri chlorophosphonazo in H 2SO 4 medium.The optimum conditions of the reaction,thus,have been deternined.The determination limits was 0.02μg·mL -1 ,and the linear range was 0.02 0.25μg·mL -1 .The method has been applied to determine in ore with satifatery results.

关 键 词：二溴硝基偶氮氯膦 高碘酸钾 钌 催化分光光度分析 含量测定 褪色反应 吸收曲线 

分 类 号：O614.821[理学—无机化学] O657.3[理学—化学]