DC Field | Value | Language |
---|---|---|
dc.contributor.author | Kim, K. | - |
dc.contributor.author | Ju, J. | - |
dc.contributor.author | Kim, B. | - |
dc.contributor.author | Chung, H.Y. | - |
dc.contributor.author | Vetráková, L. | - |
dc.contributor.author | Heger, D. | - |
dc.contributor.author | Saiz-Lopez, A. | - |
dc.contributor.author | Choi, W. | - |
dc.contributor.author | Kim, J. | - |
dc.date.accessioned | 2019-12-03T06:50:32Z | - |
dc.date.available | 2019-12-03T06:50:32Z | - |
dc.date.created | 2019-05-14 | - |
dc.date.issued | 2019-05 | - |
dc.identifier.issn | 0013-936X | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/100159 | - |
dc.description.abstract | A new mechanism for the abiotic production of molecular iodine (I-2) from iodate (IO3-), which is the most abundant iodine species, in dark conditions was identified and investigated. The production of I-2 in aqueous solution containing IO3- and nitrite (NO2-) at 25 degrees C was negligible. However, the redox chemical reaction between IO3- and NO2- rapidly proceeded in frozen solution at -20 degrees C, which resulted in the production of I-2, I-, and NO3-. The rapid redox chemical reaction between IO3- and NO2- in frozen solution is ascribed to the accumulation of IO3-, NO2-, and protons in the liquid regions between ice crystals during freezing (freeze concentration effect). This freeze concentration effect was verified by confocal Raman microscopy for the solute concentration and UV-visible absorption spectroscopy with cresol red (acid-base indicator) for the proton concentration. The freezing-induced production of I-2 in the presence of IO3- and NO2- was observed under various conditions, which suggests this abiotic process for I-2 production is not restricted to a specific region and occurs in many cold regions. NO2--induced activation of IO3- to I-2 in frozen solution may help explain why the measured values of iodine are larger than the modeled values in some polar areas. | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.title | Nitrite-Induced Activation of Iodate into Molecular Iodine in Frozen Solution | - |
dc.type | Article | - |
dc.identifier.doi | 10.1021/acs.est.8b06638 | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | ENVIRONMENTAL SCIENCE & TECHNOLOGY, v.53, no.9, pp.4892 - 4900 | - |
dc.identifier.wosid | 000467641800025 | - |
dc.citation.endPage | 4900 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 4892 | - |
dc.citation.title | ENVIRONMENTAL SCIENCE & TECHNOLOGY | - |
dc.citation.volume | 53 | - |
dc.contributor.affiliatedAuthor | Choi, W. | - |
dc.identifier.scopusid | 2-s2.0-85064838026 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.isOpenAccess | N | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | Absorption spectroscopy | - |
dc.subject.keywordPlus | Chemical activation | - |
dc.subject.keywordPlus | Freezing | - |
dc.subject.keywordPlus | Iodine compounds | - |
dc.subject.keywordPlus | Abiotic production | - |
dc.subject.keywordPlus | Acid-base indicators | - |
dc.subject.keywordPlus | Confocal Raman microscopy | - |
dc.subject.keywordPlus | Freeze concentration | - |
dc.subject.keywordPlus | Frozen solutions | - |
dc.subject.keywordPlus | Proton concentrations | - |
dc.subject.keywordPlus | Solute concentrations | - |
dc.subject.keywordPlus | UV-visible absorption spectroscopy | - |
dc.subject.keywordPlus | Nitrogen oxides | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
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