Reduction Of Trace Quantities Of Chromium (vi) By Strong Acids

dc.creatorPezzin S.H.
dc.creatorLugo Rivera J.F.
dc.creatorCollins C.H.
dc.creatorCollins K.E.
dc.date2004
dc.date2015-06-26T14:23:28Z
dc.date2015-11-26T14:11:38Z
dc.date2015-06-26T14:23:28Z
dc.date2015-11-26T14:11:38Z
dc.date.accessioned2018-03-28T21:12:11Z
dc.date.available2018-03-28T21:12:11Z
dc.identifier
dc.identifierJournal Of The Brazilian Chemical Society. , v. 15, n. 1, p. 58 - 65, 2004.
dc.identifier1035053
dc.identifier
dc.identifierhttp://www.scopus.com/inward/record.url?eid=2-s2.0-1942502904&partnerID=40&md5=e2fc646213f85134e52d820760068083
dc.identifierhttp://www.repositorio.unicamp.br/handle/REPOSIP/94174
dc.identifierhttp://repositorio.unicamp.br/jspui/handle/REPOSIP/94174
dc.identifier2-s2.0-1942502904
dc.identifier.urihttp://repositorioslatinoamericanos.uchile.cl/handle/2250/1241781
dc.descriptionThe chemical behavior of Cr(VI) at low concentrations (10-4 to 10-7 mol L-1) in several strong acids was studied using high specific activity 51Cr(VI) as a tracer. The speciation of the products from these systems was carried out by ion exchange chromatography with stepwise elution. The results show that trace quantities of Cr(VI), monitored by means of radiochromium (51Cr), are reduced in the presence of mineral acids such as perchloric, hydrochloric, hydrofluoric, sulfuric, nitric and trifluoromethanesulfonic acids, even in the absence of conventional reducing agents, producing different measureable Cr(III) species, depending on the acid anion. Detailed studies of the reduction of low concentrations of Cr(VI) with nitric acid have shown that the relative rate of reduction increases as the concentration of the acid increases or as the concentration of the Cr(VI) decreases.
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dc.languageen
dc.publisher
dc.relationJournal of the Brazilian Chemical Society
dc.rightsaberto
dc.sourceScopus
dc.titleReduction Of Trace Quantities Of Chromium (vi) By Strong Acids
dc.typeArtículos de revistas


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