催化光度法测定铑的探讨  

Study of a Method for Determination of Rhodium by Catalytic Kinetic Spectrophotometry

作　　者：郑志勇[1] 郑振峰[1] 

机构地区：[1]漳州职业技术学院 食品与生物工程系,福建漳州363000

出　　处：《漳州职业技术学院学报》2006年第3期24-26,共3页Journal of Zhangzhou Institute of Technology

摘　　要：本文研究了铑(Ⅲ)催化高碘酸钾氧化罗丹明s的褪色反应,据此反应初步建立了测定微量铑的催化光度分析法。结果表明:在适当的条件下,罗丹明S-高碘酸钾体系测定微量铑的方法具有较高的灵敏度,检出限为5．0×10-6g/L,方法的线性范围为10-140μg/L。对1μg/10ml Rh(Ⅲ)测定的相对标准偏差为1．60％(n=10)。Based on the catalytic effects of rhodium （Ⅲ） on the colour fading reactions of Rhodamine S by oxidizing with KIO4, a tentative programme of a new catalytic spectrophotometdc method for the determination of rhodium（Ⅲ） has been developed. The results show that under an opportune condition, the method has higher sensitivity, the detection limit was 5.0×10^-6g/L ,and the linear range of the determination was 10- 140μg/L. The relative standard deviation for the determination of Rh（Ⅲ）at the concentration of 1 μg/10ml Rh（Ⅲ） was calculated as 1.60% （n=10）.

关 键 词：铑 罗丹明S 高碘酸钾 催化光度法 

分 类 号：O657.3[理学—分析化学]