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dc.contributor.CRUESPUniversidade Estadual de Campinaspt_BR
dc.typeArtigo de periódicopt_BR
dc.title2-Mercaptoimidazole covalently bonded to a silica gel surface for the selective separation of mercury(II) from an aqueous solutionpt_BR
dc.contributor.authorDias, NLpt_BR
dc.contributor.authorGushikem, Ypt_BR
unicamp.authorUNICAMP,INST QUIM,BR-13083970 CAMPINAS,SP,BRAZIL UNESP ILHA SOLTEIRA,DEPT CIENCIAS,BR-15378000 ILHA SOLTEIRA,SP,BRAZILpt_BR
dc.subjectHg-II separationpt_BR
dc.subject2-mercaptoimidazole modified silica gelpt_BR
dc.subject2-mercaptoimidazole silica gel for Hg-II separationpt_BR
dc.subjectchemically modified silica gelpt_BR
dc.subjectHg-II selective adsorptionpt_BR
dc.subject.wosLigand-exchange Chromatographypt_BR
dc.subject.wosVoltammetric Determinationpt_BR
dc.subject.wosPre-concentrationpt_BR
dc.subject.wosTrace-metalspt_BR
dc.subject.wosPreconcentrationpt_BR
dc.subject.wosPerformancept_BR
dc.subject.wosAdsorptionpt_BR
dc.subject.wosElectrodept_BR
dc.subject.wosSorptionpt_BR
dc.subject.wosSupportspt_BR
dc.description.abstractSilica gel with a specific surface area of 365 m(2).g(-1) and an average pore diameter of 60 Angstrom was chemically modified with 2-mercaptoimidazole. The degree of functionalization of the covalently attached molecule, (drop SiO)(3)(CH2)(3) - MI, where MI is the 2-mercaptoimidazole bound to the silica surface by a propyl group, was 0.58 mmolg.(-1). In individual metal adsorption experiments from aqueous solutions by the batch procedure, the affinity order was Hg(II)much greater than Cd-II > Cu-II approximate to Zn-II approximate to Pb-II > Mn-II at solution pHs between 4 and 7. Due to the high affinity by the sulfur atom, Hg-II is strongly bound to the functional groups. When solution containing a mixture of Hg-II, Cd-II, Cu-II, Zn-II, Pb-II, and Mn-II ions was passed through a column packed with the adsorbent, Hg-II was the only one whose adsorption and elution was not affected by the presence of other ions.pt
dc.relation.ispartofSeparation Science And Technologypt_BR
dc.relation.ispartofabbreviationSep. Sci. Technol.pt_BR
dc.publisher.cityNew Yorkpt_BR
dc.publisherMarcel Dekker Incpt_BR
dc.date.issued1997pt_BR
dc.identifier.citationSeparation Science And Technology. Marcel Dekker Inc, v. 32, n. 15, n. 2535, n. 2545, 1997.pt_BR
dc.language.isoenpt_BR
dc.description.volume32pt_BR
dc.description.issuenumber15pt_BR
dc.description.firstpage2535pt_BR
dc.description.lastpage2545pt_BR
dc.rightsfechadopt_BR
dc.sourceWeb of Sciencept_BR
unicamp.cruespUNESPpt_BR
dc.identifier.issn0149-6395pt_BR
dc.identifier.wosidWOS:A1997YD48900008pt_BR
dc.date.available2014-12-16T11:32:21Z
dc.date.available2015-11-26T17:29:35Z-
dc.date.accessioned2014-12-16T11:32:21Z
dc.date.accessioned2015-11-26T17:29:35Z-
dc.description.provenanceMade available in DSpace on 2014-12-16T11:32:21Z (GMT). No. of bitstreams: 1 WOSA1997YD48900008.pdf: 454381 bytes, checksum: 723c2fcd52923cf71dac47bd7754502f (MD5) Previous issue date: 1997en
dc.description.provenanceMade available in DSpace on 2015-11-26T17:29:35Z (GMT). No. of bitstreams: 2 WOSA1997YD48900008.pdf: 454381 bytes, checksum: 723c2fcd52923cf71dac47bd7754502f (MD5) WOSA1997YD48900008.pdf.txt: 22356 bytes, checksum: 13dbd49cef79de02e530d0f19a4c5e0f (MD5) Previous issue date: 1997en
dc.identifier.urihttp://www.repositorio.unicamp.br/jspui/handle/REPOSIP/52584pt_BR
dc.identifier.urihttp://www.repositorio.unicamp.br/handle/REPOSIP/52584
dc.identifier.urihttp://repositorio.unicamp.br/jspui/handle/REPOSIP/52584-
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