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Studies on the role of nonaqueous slovents and chemical species transfer between two phases in analytical chemistry

分析化学中非水溶剂的作用和两相之间化学物质转移的研究

基本信息

批准号：
61303006
负责人：
SUZUKI Novuo
金额：
$ 3.26万
依托单位：
TOHOKU UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for Co-operative Research (A)
财政年份：
1986
资助国家：
日本
起止时间：
1986 至 1987
项目状态：
已结题

项目摘要

The research project is carried out to study the role of nonaqueous solvents and the transfer of chemical species between two phases by modern spectrometries and electrochemical methods. Solvation of the chemical specal species in various nonagueous solvents and its mass transfer at solid/liquid interface was investigated with photoelectron spectromentry and photoacoustic spectrometry. Effect of the electrolytes on liquid junction potential in diverse nonaqueous solvents and the ion transfer at liquid/liquid interface was also investigated. Halfwave potential for reversible ion transfer is related to the ionic natures. Mechanism of the electrogenerated chemiluminescence was investigated and was effectively applied to determine aromatic hydrocarbons in nonpolar aprotic solvents. Column-electrolytic stopped flow method, minicomputer aided ultrafase-scn microvoltam-metry and resonance Raman spectromety were introduced to investigate organic cation radicals in nonaqueous solvents. Relation between the redox potential of metal complexes and their spectroscopic parameters was discussed. Reaction mechanism of metal complexes was investigated by different methods and the effect of nonaqueous solvents on their formation constants was also discussed. Ionic solvation of various monovalent ions in nonaqueous solvents was studied by thermometric and conductance measurements. Partition coefficients of metal complexes were determined in various nonpolar-polar solvent systems. Effect of polar solvents on the partition coefficient was different in the complexies having different central metals due to a specific interaction of the respectve complexes with polar solvents. Parts of these studies were presented at academic meetings and have been published in authentic journals.

该研究项目旨在通过现代光谱学和电化学方法研究非水溶剂的作用以及两相之间化学物质的转移。用光电子能谱和光声能谱研究了化学物种在不同非水溶剂中的溶剂化及其在固/液界面的传质。研究了电解质对不同非水溶剂中液接电位和液/液界面离子迁移的影响。可逆离子迁移的半波电位与离子的性质有关。研究了电致化学发光的机理，并将其应用于非极性非质子溶剂中芳烃的测定。本文介绍了柱电解停流法、微型计算机辅助超快扫描伏安法和共振拉曼光谱法研究非水溶剂中有机阳离子自由基。讨论了金属配合物的氧化还原电位与光谱参数的关系。用不同的方法研究了金属配合物的反应机理，并讨论了非水溶剂对其形成常数的影响。本文用测温法和电导法研究了各种一价离子在非水溶剂中的离子溶剂化作用。测定了金属配合物在各种非极性-极性溶剂体系中的分配系数。不同中心金属的配合物中，极性溶剂对分配系数的影响不同，这是由于不同中心金属的配合物与极性溶剂的特定相互作用所致。这些研究的一部分在学术会议上提出，并发表在权威期刊上。