KOPRI Repository

Cr(VI) Formation via Oxyhalide-Induced Oxidative Dissolution of Chromium Oxide/Hydroxide in Aqueous and Frozen Solution

Cited 0 time in wos
Cited 0 time in scopus
Metadata Downloads

Full metadata record

DC Field Value Language
dc.contributor.authorMin, Dae Wi-
dc.contributor.authorKim, Kitae-
dc.contributor.authorKim, Bomi-
dc.contributor.authorLee, Giehyeon-
dc.contributor.authorChoi, Wonyong-
dc.date.accessioned2021-05-03T08:18:39Z-
dc.date.available2021-05-03T08:18:39Z-
dc.date.issued2020-11-
dc.identifier.urihttps://repository.kopri.re.kr/handle/201206/11808-
dc.description.abstractThe oxidative dissolution of Cr(III) species (Cr2O3 and Cr(OH)3) by oxyhalide anions, which produces hexavalent chromium (Cr(VI)), was studied in aqueous and frozen solution. The oxyhalide-induced oxidation of Cr(III) in frozen solution showed a different trend from that in aqueous solution. Cr(VI) production was higher in frozen than aqueous solution with hypochloride (ClO-) and bromate (BrO3-), but suppressed in frozen solution with hypobromite (BrO-) and periodate (IO4-). In particular, bromate markedly enhanced Cr(VI) production in frozen solution whereas it had a negligible activity in aqueous solution. On the contrary, periodate produced Cr(VI) significantly in aqueous solution but greatly suppressed it in frozen solution. Bromate was found to be much more concentrated in the ice grain boundary than periodate according to both chemical and Raman spectral analysis. The oxidative transformation of Cr(III) to Cr(VI) was accompanied by the concurrent and stoichiometric reduction of oxyhalide anions. Dissolved O2 had little effect on the oxidative dissolution but dissolved organic matters retarded the oxidation of Cr2O3 in both aqueous and frozen conditions. This study proposes that the oxyhalide-induced oxidation of Cr(III) (particularly by bromate) in frozen condition might have a significant effect on the generation of Cr(VI) in the frozen environment.en_US
dc.languageEnglishen_US
dc.language.isoen_USen_US
dc.subjectEngineeringen_US
dc.subjectEnvironmental Sciences & Ecologyen_US
dc.subject.classification기타()en_US
dc.titleCr(VI) Formation via Oxyhalide-Induced Oxidative Dissolution of Chromium Oxide/Hydroxide in Aqueous and Frozen Solutionen_US
dc.title.alternative액상과 얼음상에서 크롬산화물로부터 할로겐물질에 의한 독성 6가크롬 용출기작 연구en_US
dc.typeArticleen_US
dc.identifier.bibliographicCitationMin, Dae Wi, et al. 2020. "Cr(VI) Formation via Oxyhalide-Induced Oxidative Dissolution of Chromium Oxide/Hydroxide in Aqueous and Frozen Solution". <em>ENVIRONMENTAL SCIENCE & TECHNOLOGY</em>, 54(22): 14413-14421.en_US
dc.citation.titleENVIRONMENTAL SCIENCE & TECHNOLOGYen_US
dc.citation.volume54en_US
dc.citation.number22en_US
dc.identifier.doi10.1021/acs.est.0c04851-
dc.citation.startPage14413en_US
dc.citation.endPage14421en_US
dc.description.articleClassificationSCI-
dc.description.jcrRateJCR 2018:5.578en_US
dc.subject.keywordhaxavalent chromiumen_US
dc.subject.keywordice chemitsryen_US
dc.subject.keywordoxyhalidesen_US
dc.identifier.localId2020-0222-
dc.identifier.scopusid2-s2.0-85096347558-
dc.identifier.wosid000592863400028-
Appears in Collections  
2020-2020, Investigation of ice microstructure properties for developing low-temperature purification and environment/energy materials (20-20) / Kim, Kitae (PE20030)
Files in This Item

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse