1990 Fiscal Year Final Research Report Summary
Study of the Liquid Junction Potential between Different Solvents and Its Application to Analytical and Solution Chemistries
| Project/Area Number |
01470034
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
分析・地球化学
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| Research Institution | Shinshu University |
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Principal Investigator |
IZUTSUKOSUKE Faculty of Science, Shinshu University, Professor, 理学部, 教授 (70025336)
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| Project Period (FY) |
1989 – 1990
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| Keywords | Nonaqueous solvents / Potential measurements / ion transfer voltammetry / ion solvation / 01Liquid junction potential between different solvents |
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| Research Abstract |
The liquid junction potential (ljp) between different solvents contains three components, i. e., component a) related to electrolyte concentrations and ionic mobilities, b) related to ion-solvent interactions, and c) related to solvent-solvent interactions. The results of the present research are as
follows :
1) A junction between solutions of the same electrolyte (c_1 MX(S_1)*c_2 MX(S_2)) : Equations were derived for components a) and b). The equation for a) was experimentally confirmed to be valid quantitatively. The equation for b) was valid quantitativaly for junctions between immiscible solvents but qualitatively for junctions between miscible solvents. A new method was proposed for the estimation of the ljp, in which the values of the three components were estimated separately and then they were summed up. The method was proved to give reasonable results.
2) A junction between different electrolyte solutions (c_1 MX(S_2)*c_2 NY(S_2)) : Theoretical and experimental studies showed that the ljp at the junction of this type may be treated in approximately similar manners as in 1).
3) Voltammetric study of ion transfer at the junction between different solvents : Various cells were constructed to study ion transfer at the junction. For junctions between miscible solvents, a cell in which two solutions were separated by semipermeable membrane was found to be applicable. The st
udy is now in progress.
4) Application to analytical and solution chemistries : The above results were applied to solve the problems of the ljp in analytical and solution chemistries.
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