Determination of Hg in water by CVAAS using 2-aminothiazole modified silica
Autor(a) principal: | |
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Data de Publicação: | 2005 |
Outros Autores: | , , , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1007/s00572-004-0293-6 http://hdl.handle.net/11449/224696 |
Resumo: | This paper discusses a rapid and sensitive method developed to determine trace levels of mercury in natural water samples by cold vapor atomic absorption spectrometry using a preconcentration system composed by mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT) coupled on-line with the spectrometer's cold vapor generator system. The optimum preconcentration conditions are also described here. The preconcentrated Hg(II) ions were eluted directly from the column to the spectrometer's cold vapor generator system using 100 μL of 2 mol L-1 hydrochloric acid and the retention efficiency achieved exceeded 95%. The enrichment factors determined were 29, 38 and 46 using 3, 4 and 5 mL of preconcentrated aqueous solutions containing 400 ng L-1 of Hg. The detection limit calculated was 5 ng L-1. The preconcentration procedure was applied to determine trace level mercury in spiked river water samples. |
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Repositório Institucional da UNESP |
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Determination of Hg in water by CVAAS using 2-aminothiazole modified silicaCVAASFlow-injection analysisMercuryModified silicaPreconcentrationThis paper discusses a rapid and sensitive method developed to determine trace levels of mercury in natural water samples by cold vapor atomic absorption spectrometry using a preconcentration system composed by mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT) coupled on-line with the spectrometer's cold vapor generator system. The optimum preconcentration conditions are also described here. The preconcentrated Hg(II) ions were eluted directly from the column to the spectrometer's cold vapor generator system using 100 μL of 2 mol L-1 hydrochloric acid and the retention efficiency achieved exceeded 95%. The enrichment factors determined were 29, 38 and 46 using 3, 4 and 5 mL of preconcentrated aqueous solutions containing 400 ng L-1 of Hg. The detection limit calculated was 5 ng L-1. The preconcentration procedure was applied to determine trace level mercury in spiked river water samples.Instituto de Biociências Departamento de Química e Bioquímica/UNESP, Caixa Postal 510, 18618-000, Botucatu, SPInstituto de Química Departamento de Química Analítica/UNESP, Caixa Postal 355, 14800-900, Araraquara, SPInstituto de Biociências Departamento de Física e Biofísica/UNESP, Caixa Postal 510, 18618-000, Botucatu, SPInstituto de Biociências Departamento de Química e Bioquímica/UNESP, Caixa Postal 510, 18618-000, Botucatu, SPInstituto de Química Departamento de Química Analítica/UNESP, Caixa Postal 355, 14800-900, Araraquara, SPInstituto de Biociências Departamento de Física e Biofísica/UNESP, Caixa Postal 510, 18618-000, Botucatu, SPUniversidade Estadual Paulista (UNESP)Silva, F. A. [UNESP]De Alcântara, I. L. [UNESP]Roldan, P. S. [UNESP]Padilha, C. C.F. [UNESP]De Araújo, A. B. [UNESP]Valente, J. P.S. [UNESP]Florentino, A. O. [UNESP]Padilha, P. M. [UNESP]2022-04-28T20:06:55Z2022-04-28T20:06:55Z2005-07-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/article47-55http://dx.doi.org/10.1007/s00572-004-0293-6Ecletica Quimica, v. 30, n. 3, p. 47-55, 2005.0100-4670http://hdl.handle.net/11449/22469610.1007/s00572-004-0293-62-s2.0-31344464410Scopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengEcletica Quimicainfo:eu-repo/semantics/openAccess2022-04-28T20:06:55Zoai:repositorio.unesp.br:11449/224696Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462022-04-28T20:06:55Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Determination of Hg in water by CVAAS using 2-aminothiazole modified silica |
title |
Determination of Hg in water by CVAAS using 2-aminothiazole modified silica |
spellingShingle |
Determination of Hg in water by CVAAS using 2-aminothiazole modified silica Silva, F. A. [UNESP] CVAAS Flow-injection analysis Mercury Modified silica Preconcentration |
title_short |
Determination of Hg in water by CVAAS using 2-aminothiazole modified silica |
title_full |
Determination of Hg in water by CVAAS using 2-aminothiazole modified silica |
title_fullStr |
Determination of Hg in water by CVAAS using 2-aminothiazole modified silica |
title_full_unstemmed |
Determination of Hg in water by CVAAS using 2-aminothiazole modified silica |
title_sort |
Determination of Hg in water by CVAAS using 2-aminothiazole modified silica |
author |
Silva, F. A. [UNESP] |
author_facet |
Silva, F. A. [UNESP] De Alcântara, I. L. [UNESP] Roldan, P. S. [UNESP] Padilha, C. C.F. [UNESP] De Araújo, A. B. [UNESP] Valente, J. P.S. [UNESP] Florentino, A. O. [UNESP] Padilha, P. M. [UNESP] |
author_role |
author |
author2 |
De Alcântara, I. L. [UNESP] Roldan, P. S. [UNESP] Padilha, C. C.F. [UNESP] De Araújo, A. B. [UNESP] Valente, J. P.S. [UNESP] Florentino, A. O. [UNESP] Padilha, P. M. [UNESP] |
author2_role |
author author author author author author author |
dc.contributor.none.fl_str_mv |
Universidade Estadual Paulista (UNESP) |
dc.contributor.author.fl_str_mv |
Silva, F. A. [UNESP] De Alcântara, I. L. [UNESP] Roldan, P. S. [UNESP] Padilha, C. C.F. [UNESP] De Araújo, A. B. [UNESP] Valente, J. P.S. [UNESP] Florentino, A. O. [UNESP] Padilha, P. M. [UNESP] |
dc.subject.por.fl_str_mv |
CVAAS Flow-injection analysis Mercury Modified silica Preconcentration |
topic |
CVAAS Flow-injection analysis Mercury Modified silica Preconcentration |
description |
This paper discusses a rapid and sensitive method developed to determine trace levels of mercury in natural water samples by cold vapor atomic absorption spectrometry using a preconcentration system composed by mini-column packed with 100 mg of 2-aminothiazol modified silica gel (SiAT) coupled on-line with the spectrometer's cold vapor generator system. The optimum preconcentration conditions are also described here. The preconcentrated Hg(II) ions were eluted directly from the column to the spectrometer's cold vapor generator system using 100 μL of 2 mol L-1 hydrochloric acid and the retention efficiency achieved exceeded 95%. The enrichment factors determined were 29, 38 and 46 using 3, 4 and 5 mL of preconcentrated aqueous solutions containing 400 ng L-1 of Hg. The detection limit calculated was 5 ng L-1. The preconcentration procedure was applied to determine trace level mercury in spiked river water samples. |
publishDate |
2005 |
dc.date.none.fl_str_mv |
2005-07-01 2022-04-28T20:06:55Z 2022-04-28T20:06:55Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://dx.doi.org/10.1007/s00572-004-0293-6 Ecletica Quimica, v. 30, n. 3, p. 47-55, 2005. 0100-4670 http://hdl.handle.net/11449/224696 10.1007/s00572-004-0293-6 2-s2.0-31344464410 |
url |
http://dx.doi.org/10.1007/s00572-004-0293-6 http://hdl.handle.net/11449/224696 |
identifier_str_mv |
Ecletica Quimica, v. 30, n. 3, p. 47-55, 2005. 0100-4670 10.1007/s00572-004-0293-6 2-s2.0-31344464410 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Ecletica Quimica |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
47-55 |
dc.source.none.fl_str_mv |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1799965497035325440 |