DC Field | Value | Language |
---|---|---|
dc.contributor.author | Choi, Seonggyu | ko |
dc.contributor.author | Lee, Jun-Yeop | ko |
dc.contributor.author | Yun, Jong-Il | ko |
dc.date.accessioned | 2017-08-08T06:07:09Z | - |
dc.date.available | 2017-08-08T06:07:09Z | - |
dc.date.created | 2017-05-12 | - |
dc.date.created | 2017-05-12 | - |
dc.date.created | 2017-05-12 | - |
dc.date.issued | 2017-06 | - |
dc.identifier.citation | JOURNAL OF SOLUTION CHEMISTRY, v.46, no.6, pp.1272 - 1283 | - |
dc.identifier.issn | 0095-9782 | - |
dc.identifier.uri | http://hdl.handle.net/10203/225110 | - |
dc.description.abstract | The complexation characteristics of thorium-arsenazo III in the range of 1-6 mol center dot L-1 hydrochloric acid media were investigated by UV-Vis absorption spectroscopy and computational analysis. The chemical equilibrium model of thorium-arsenazo III complexation was established including the species distribution of arsenazo III, the formation of thorium chloride species, and the release of protons from thorium-arsenazo III complexes. In the spectra of thorium-arsenazo III complexes, two characteristic absorption peaks were observed at 610 and 660 nm, and the latter peak showed a tendency to shift about 4 nm to higher wavelength as the acidity of the hydrochloric acid media increased from 1 to 6 mol center dot L-1. Analysis of the experimental data indicates that the molar absorptivities of both 1:1 and 1:2 complexes (thorium to arsenazo III) steadily increase as the acidity of medium increases. The determined stability constants of 1:1 and 1:2 complexes at various concentrations of hydrochloric acid were extrapolated to zero ionic strength, based on the specific ion interaction theory (SIT) approach. The limiting stability constants were determined to be = 8.56 +/- 0.13 and = 15.17 +/- 0.18 with ion interaction coefficients of Delta epsilon (11) = -0.57 +/- 0.02 kg center dot mol(-1) and Delta epsilon (12) = -0.60 +/- 0.04 kg center dot mol(-1), respectively. | - |
dc.language | English | - |
dc.publisher | SPRINGER/PLENUM PUBLISHERS | - |
dc.title | Stability Constants and Spectroscopic Properties of Thorium(IV)-Arsenazo III Complexes in Aqueous Hydrochloric Medium | - |
dc.type | Article | - |
dc.identifier.wosid | 000404328500006 | - |
dc.identifier.scopusid | 2-s2.0-85020732137 | - |
dc.type.rims | ART | - |
dc.citation.volume | 46 | - |
dc.citation.issue | 6 | - |
dc.citation.beginningpage | 1272 | - |
dc.citation.endingpage | 1283 | - |
dc.citation.publicationname | JOURNAL OF SOLUTION CHEMISTRY | - |
dc.identifier.doi | 10.1007/s10953-017-0637-4 | - |
dc.contributor.localauthor | Yun, Jong-Il | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | Thorium | - |
dc.subject.keywordAuthor | Arsenazo III | - |
dc.subject.keywordAuthor | Stability constant | - |
dc.subject.keywordAuthor | Ion interaction coefficient | - |
dc.subject.keywordAuthor | Spectrophotometry | - |
dc.subject.keywordAuthor | Computational analysis | - |
dc.subject.keywordPlus | ION-INTERACTION PARAMETERS | - |
dc.subject.keywordPlus | ARSENAZO-III | - |
dc.subject.keywordPlus | SPECTROPHOTOMETRIC DETERMINATION | - |
dc.subject.keywordPlus | THORIUM | - |
dc.subject.keywordPlus | URANIUM | - |
dc.subject.keywordPlus | ELECTROLYTES | - |
dc.subject.keywordPlus | 25-DEGREES-C | - |
dc.subject.keywordPlus | LANTHANIDES | - |
dc.subject.keywordPlus | STRENGTHS | - |
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