摘要
报告了3组(胂类、膦类和羧酸类)共8种不对称变色酸双偶氮试剂与某些氧化剂(KIO4、KBrO3)之间的褪色反应对于痕量铂系元素的依赖关系。考察了18个褪色反应的最佳条件、检出限及线性关系范围。提出了一系列光度法测定痕量钌、铑、锇、铱、铂的新方法。此类方法可直接在水溶液中进行、简便快捷,且灵敏度极高。已用于贵金属精矿、催化剂等样品中铂系元素含量的测定。
The fading reactions between eight kinds of asymmetric bis(arylazo)chromotropic acid reagents(containing phosphono arsenazo and carboxyazo)and oxidant is studied.It is found out that this reaction is catalyzed by trace platinum metals A series of catalytic spectrophotometric methods for determining trace platinum metals are established.In the same time,optimum conditions of reactions,detection limit and linear range of methods are also investigated.These methods posses advantages of simplicity,rapidity and high sensitivity.It is applied to the determination of platinum metals more and catalyst with satisfactory results.
出处
《广东工业大学学报》
CAS
1997年第S1期10-12,23,共4页
Journal of Guangdong University of Technology
关键词
不对称变色酸双偶氮试剂
铂系元素
催化分光光度分析
asymmetric bis(arylazo) chromotropic acid
platinum series metals
catalytic spectrophotometry method