Ir-KIO4-罗丹明B催化动力学光度法测定铱  

Catalytic Spectrophotometric Determination of Iridium Using Ir-KIO4- rhodamine B

作　　者：李彩云[1] LI Cai-yun (Pingyuan University,Xinxiang 453003, China)

机构地区：[1]平原大学，河南新乡453003

出　　处：《平原大学学报》2004年第3期8-9,共2页Journal of Pingyuan University

摘　　要：本文基于盐酸介质中,微量铱对KIO4氧化罗丹明B并使其褪色的反应体系具有显著的催化作用,建立了一种灵敏度高的测定微量铱的新方法,其检测限为1.78╳10-9g/mL, 线性范围0～40ng/mL.用于实际样品的测定,结果满意.A catalytic spectrophotometric method was proposed for determining Ir based on its catalytic effect on the oxidation of rhodamine B by KIO 4 in the presence of HCl. The detection limit for Pb(Ⅱ) is 1.78╳10-9g/mL, the linear range of the determination is 0～40ng/mL. The proposed method has been applied to the determination of trace Ir in actual sample with satisfactory results.

关 键 词：催化动力学光度法 铱 罗丹明B 测定 

分 类 号：O614.825[理学—无机化学;理学—化学] O657.3[理学—分析化学;理学—化学]