铑-钨酸盐-罗丹明6G缔合体系的共振光散射技术研究及其应用  

Study on the Ion-associated Complex of Rhodium-tungstate-rhodamine 6G by the Resonance Light-Scattering Technique and Its Application

作　　者：苗兆涛[1] 龙巍然[2] 陶晋飞[1] 张婷[1] 曹秋娥[1] 

机构地区：[1]云南大学化学科学与工程学院,昆明650091 [2]兴义民族师范学院化生系,贵州兴义562400

出　　处：《贵金属》2012年第2期59-62,共4页Precious Metals

基　　金：国家自然科学基金资助项目(2096009)

摘　　要：Rh(Ⅲ)与钨酸盐及罗丹明6G在阿拉伯胶存在下能形成离子缔合物,且该离子缔合物在579 nm处具有强烈的共振瑞利光散射信号。据此,建立了一种测定痕量Rh(III)的共振瑞利散射光谱法,该方法的线性范围为0.01～0.25 ng/mL,检出限为0.0024 ng/mL,且大量存在的常见离子对Rh(Ⅲ)的测定不干扰。将方法用于测定催化剂及冶金产品中的铑,结果与标准方法(SnCl2法)测得值基本一致。The intensive signal of the resonance light - scattering at 579 nm was observed when the ion - associated complex was formed among rhodium（Ⅲ）, tungstate and rhodamine 6G in the presence of acacia senegal. And this phenomenon was used to develop a method for the determination of trace amounts of Rh（Ⅲ）. The method was free from the interference of a lot of common ions with the linear range of 0.01-0.25 ng/mL and detection limit of 0. 0024 ng/mL. The results for determination of rhodium in real samples obtained by this method were consistent well with those obtained by SnC12 standard method.

关 键 词：分析化学 铑 罗丹明6G 钨酸盐 共振光散射技术 

分 类 号：O657.31[理学—分析化学]