Concentration of Cu(II) and Cd(II) from natural river water by Adsorption on a Modified Silica Surface

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dc.contributor.authorFerreira, Guilherme [UNESP]
dc.contributor.authorPereira, Adriano S. [UNESP]
dc.contributor.authorCaetano, Laercio [UNESP]
dc.contributor.authorSantos, Ademir dos [UNESP]
dc.contributor.authorMartines, Marco Antonio U.
dc.contributor.authorPadilha, Pedro M. [UNESP]
dc.contributor.authorZara, Luiz Fabricio
dc.contributor.authorSilva, Rafael I. V. [UNESP]
dc.contributor.authorCastro, Gustavo R. [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal de Mato Grosso do Sul (UFMS)
dc.contributor.institutionUniversidade Estadual de Campinas (UNICAMP)
dc.contributor.institutionUniversidade de Brasília (UnB)
dc.date.accessioned2014-05-27T11:25:23Z
dc.date.available2014-05-27T11:25:23Z
dc.date.issued2010-12-01
dc.description.abstractA high surface area silica gel (737 ± m2 g-1) was synthesized modified through a two-step reaction with a 4-amino-2-mercaptopyrimidine ligand and applied to Cu(II) and Cd(II) adsorption from an aqueous medium. The modified material was characterized by FTIR, which showed that attachment of the molecule occurred via thiol groups at 2547 and 2600 cm-1, and by elemental analysis that indicated the presence of 0.0102 mmol of ligand. The data from adsorption experiments were adjusted to a modified Langmuir equation and the maximum adsorption capacity was 6.6 and 3.8 μmol g-1 for Cu(II) and Cd(II), respectively. After adjusting several parameters, the material was applied in the preconcentration of natural river water using a continuous flow system before and after sample mineralization, and the results showed a 10-fold enrichment factor. The proposed method was validated through preconcentration and analysis of certified standard reference material (1643e), whose results were in agreement with the values provided by the manufacturer.en
dc.description.affiliationIB-UNESP Depto. Química e Bioquímica, C.P. 510, 18618-000 Botucatu, SP
dc.description.affiliationFEIS-UNESP Depto. Física e Química, C. P. 31, 15385-000 Ilha Solteira, SP
dc.description.affiliationIQ-UNESP Depto. de Química Analítica, C. P. 14800-900 Araraquara, SP
dc.description.affiliationUFMS Depto. de Química, C. P. 549, 79070-900 Campo Grande, MS
dc.description.affiliationINCT de Bioanalítica-UNICAMP, C.P. 6154, 13084-971 Campinas, SP
dc.description.affiliationUNB-Dept. Química, 73300-000 Planaltina, GO
dc.description.affiliationUnespIB-UNESP Depto. Química e Bioquímica, C.P. 510, 18618-000 Botucatu, SP
dc.description.affiliationUnespFEIS-UNESP Depto. Física e Química, C. P. 31, 15385-000 Ilha Solteira, SP
dc.description.affiliationUnespIQ-UNESP Depto. de Química Analítica, C. P. 14800-900 Araraquara, SP
dc.format.extent175-180
dc.identifierhttp://www.brjac.com.br/Revista_BrJAC_1_4.pdf
dc.identifier.citationBrazilian Journal of Analytical Chemistry, v. 1, n. 4, p. 175-180, 2010.
dc.identifier.issn2179-3425
dc.identifier.issn2179-3433
dc.identifier.lattes6981448637456391
dc.identifier.orcid0000-0003-4179-0574
dc.identifier.scopus2-s2.0-84878863274
dc.identifier.urihttp://hdl.handle.net/11449/72151
dc.language.isoeng
dc.relation.ispartofBrazilian Journal of Analytical Chemistry
dc.relation.ispartofsjr0,138
dc.relation.ispartofsjr0,138
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectContinuous flow system
dc.subjectMetal ions
dc.subjectPreconcentration
dc.subjectRiver water
dc.subjectSolid phase extraction
dc.subjectSurface modification
dc.titleConcentration of Cu(II) and Cd(II) from natural river water by Adsorption on a Modified Silica Surfaceen
dc.typeArtigo
unesp.author.lattes6981448637456391[6]
unesp.author.orcid0000-0003-4179-0574[6]
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Biociências, Botucatupt
unesp.campusUniversidade Estadual Paulista (Unesp), Instituto de Química, Araraquarapt
unesp.campusUniversidade Estadual Paulista (Unesp), Faculdade de Engenharia, Ilha Solteirapt
unesp.departmentFísica e Química - FEISpt

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Artigos - Química e Bioquímica - IBB
Artigos - Química Analítica - IQ
Ilha Solteira - FEIS - Faculdade de Engenharia