钯(Ⅱ)-盐酸吗啉胍螯合物与卤代荧光素染料相互作用的超瑞利散射光谱及其分析应用研究  

Hyper-Rayleigh Scattering Spectra of Palladium(Ⅱ)-Moroxydine Hydrochloride-Fluorescein Halide Dye Systems and Their Analytical Application

作　　者：孟维伟[1] 刘忠芳[1] 刘绍璞[1] 胡小莉[1] 石燕[1] 

机构地区：[1]西南大学化学化工学院,重庆400715

出　　处：《西南大学学报（自然科学版）》2009年第3期49-53,共5页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金资助项目(No.20475045);西南大学科技基金计划资助项目(No.SWNUQ2004017)

摘　　要：在pH-4．4～5．0的HAc—NaAc介质中，钯（Ⅱ）与盐酸吗啉胍（Abob）反应形成螯舍阳离子，它能进一步与二溴荧光素（DBF）、曙红Y（EY），赤藓红（Ery）阴离子反应形成离子缔合物，引起超瑞利散射（HRS）显著增强．3个三元体系具有相似的光谱特征，最大HRS波长位于390nm附近．在一定条件下超瑞利散射增强（AIHRs）与Abob的浓度成正比，其线性范围是0．029～3．0μg／mL（DBF），0．14～3．5μg／mL（EY）和0．23～1．9μg／mL（Ery），检出限分别为0．0086μg／mL（DBF），0．043μg／mL（EY）和0．069μg／mL（Ery）．研究了HRS法的适宜反应条件和共存物质的影响，发展了高灵敏、简便快速测定Abob的新方法，可用于尿样中Abob的测定．In an acidic medium with pH = 4.4--5.0, palladium （Ⅱ） chelated with moroxydine hydrochloride to form the cation [Pd（Abob）]^2＋ , which reacted further with dibromofluorescein（DBF）, eosin Y（EY） and erythrosin（Ery） to form ion-association complexes, respectively. As a result, the hyper Rayleigh scattering（HRS） intensities were enhanced greatly. The maximum HRS peak of the three systems was all located at approximately 390 nm. HRS intensity was proportional to the concentration of moroxydine hydrochloride （Abob） in the range of 0. 029--3.0 μg/mL for DBF, 0.14--3.5 μg/mL for EY and 0.23--1.9μg/mL for Ery, and their detection limit （3a） was 0. 008 6, 0. 043 and 0. 069μg/mL, respectively. The optimum conditions of the reaction and the properties of analytical chemistry were investigated. Therefore, a new method for the determination of moroxydine hydrochloride（Abob） by HRS was developed. The method has high sensitivity and good selectivity and has been applied to the determination of Abob in uric samples with satisfactory results.

关 键 词：超瑞利散射 盐酸吗啉胍 钯(Ⅱ) 二溴荧光素 曙红Y 赤藓红 

分 类 号：O657.3[理学—分析化学]