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Kinetic Analysis of Metal Ions Based on Differences in Their Fluorospecificity and Reactivity

基于金属离子氟特异性和反应性差异的动力学分析

基本信息

批准号：
06650931
负责人：
YAMADA Shinkichi
金额：
$ 1.28万
依托单位：
Shizuoka University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06650931/
关键词：
Kinetic methods of analysis Flow-injection analysis Fluorometry

项目摘要

Under the research projects proposed, some experiments were carried out and the following results were obtained.1. Kinetics and thermodynamincs for the complexation reaction of Sn (II) and Sn (IV) with morin have been studied fluorometrically to design a differential analysis of tins. Under the selected conditions, Sn (IV) up to 1*10^<-5> M could be selectively determined with a detection limit of 2*10^<-7> M.2. Comp lexation reactions of antiomy with 3-hydroxy-7-methoxyflavone and tin with morin have been studied to design flow-injection analysis of these metal ions, and conditions for the fluorometric determination of Sb (III), Sb (V), Sn (II), and Sn (IV) were established.3. Oxidation reaction of Sb (III)-3-hydroxy-7-methoxyflavone complex with Cr (VI) has been studied fluorometrically to design a sensitive analysis of Cr (VI). Under the selected conditions, Cr (VI) up to 3.2*10^<-6> M could be determined with a detection limit of 2*10^<-7> M.The presence of a 1400-fold amount (by molarity) of Cr (III) could be tolerated in the determination of 2*10^<-7> M of Cr (VI).4. Kinetics of the complexation reaction of Zr (IV) and Hf (IV) with SXO have been studied to estimate the gamma parameters for both metal ions. With the same parameter, some possibilities to design a new kinetic-catalytic method of analysis based on ligand-substitution reactions involving Zr (IV) were proposed.5. Kinetics of the ligand-substitution reaction of Hg (II)-PAR complex with CDTA have been studied to design a new sensitive and selective determination of a catalyst. Under the selected conditions, sulfite up to 1.5*10^<-6> M and thiosulfate up to 7*10^<-7> M could be determined with a detection limit of 3*10^<-8> M and 2*10^<-8> M in the presence of 10000-fold and 25000-fold amounts (by molarity) of sulfate, respectively.

在提出的研究课题下，进行了相关的实验研究，取得了以下成果.本文用荧光光度法研究了Sn（Ⅱ）和Sn（Ⅳ）与桑色素络合反应的动力学和动力学，设计了锡的差示分析方法。在选定的条件下，锡（IV）可选择性地测定高达1 × 10 - 4 μ <-5>M，检测限为2 × 10 - 4 μ M<-7>。研究了锑与3-羟基-7-甲氧基黄酮、锡与桑色素的络合反应，设计了流动注射分析方法，建立了Sb（III）、Sb（V）、Sn（II）、Sn（IV）的荧光测定条件.研究了Sb（Ⅲ）-3-羟基-7-甲氧基黄酮配合物与Cr（Ⅵ）的氧化反应，设计了Cr（Ⅵ）的灵敏分析方法。在选定的条件下，Cr（VI）可高达3.2*10 <-6>^ M，检测限为2*10^<-7>M。在测定2*10^ M的Cr（VI）时，可容忍1400倍量（按摩尔浓度计）的Cr（III）的存在<-7>。研究了Zr（IV）和Hf（IV）与SXO的络合反应动力学，以估计两种金属离子的γ参数。在相同的参数下，提出了基于Zr（IV）配体取代反应设计新的动力学催化分析方法的可能性.本文研究了汞（Ⅱ）-PAR络合物与CDTA配体取代反应的动力学，设计了一种新的灵敏、选择性测定催化剂。在选定的条件下，亚硫酸盐可高达1.5 × 10 ~（-1）<-6>M，硫代硫酸盐可高达7 × 10 <-7>~（-1）M，检测限分别为3 × 10 ~（-1）<-8>M和2 × 10 ~（-1）<-8>M。