POLYELECTROLYTE MODIFIED SILICA GEL MICRO-COLUMN SOLID PHASE EXTRACTION FOR THE DETERMINATION OF SILVER IN ENVIRONMENTAL WATER SAMPLES BY FLAME ATOMIC ABSORPTION SPECTROMETRY

Silica gel was chemically modified with polyelectrolyte and used as a solid phase extraction adsorbent for the determination of trace silver in environmental water samples by flame absorption spectrometry (FAAS). The effects of pH, sample flow rate and volume, elution conditions and co-existing ions...

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Autores principales:	XIANG,GUOQIANG, LI,LULU, JIANG,XIUMING, HE,LIJUN, FAN,LU
Lenguaje:	English
Publicado:	Sociedad Chilena de Química 2013
Materias:	Polyelectrolyte Silica gel Solid phase extraction Silver Water samples FAAS
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400060
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spelling	oai:scielo:S0717-970720130004000602014-09-02POLYELECTROLYTE MODIFIED SILICA GEL MICRO-COLUMN SOLID PHASE EXTRACTION FOR THE DETERMINATION OF SILVER IN ENVIRONMENTAL WATER SAMPLES BY FLAME ATOMIC ABSORPTION SPECTROMETRYXIANG,GUOQIANGLI,LULUJIANG,XIUMINGHE,LIJUNFAN,LU Polyelectrolyte Silica gel Solid phase extraction Silver Water samples FAAS Silica gel was chemically modified with polyelectrolyte and used as a solid phase extraction adsorbent for the determination of trace silver in environmental water samples by flame absorption spectrometry (FAAS). The effects of pH, sample flow rate and volume, elution conditions and co-existing ions on the recovery of the analyte were investigated. The results showed that silver could be adsorbed at pH 5.0 and eluted by 5.0 mL 2% thiourea in HNO3 (0.1 mol L-1). Under the optimized conditions, the adsorption capacity of modified silica gel was found to be 8.6 mg g-1 for silver. The detection limit of the proposed method was 1.0 ng mL-1 for silver with an enrichment factor of 18.7. The analytical result for the certified reference water sample (GBW08610) was in a good agreement with the certified value. The proposed method has also been successfully applied to the determination of trace silver in drinking water, well water, snow water and waste water with the recoveries for spiked samples between 94% and 105%.info:eu-repo/semantics/openAccessSociedad Chilena de QuímicaJournal of the Chilean Chemical Society v.58 n.4 20132013-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400060en10.4067/S0717-97072013000400060
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Polyelectrolyte Silica gel Solid phase extraction Silver Water samples FAAS
spellingShingle	Polyelectrolyte Silica gel Solid phase extraction Silver Water samples FAAS XIANG,GUOQIANG LI,LULU JIANG,XIUMING HE,LIJUN FAN,LU POLYELECTROLYTE MODIFIED SILICA GEL MICRO-COLUMN SOLID PHASE EXTRACTION FOR THE DETERMINATION OF SILVER IN ENVIRONMENTAL WATER SAMPLES BY FLAME ATOMIC ABSORPTION SPECTROMETRY
description	Silica gel was chemically modified with polyelectrolyte and used as a solid phase extraction adsorbent for the determination of trace silver in environmental water samples by flame absorption spectrometry (FAAS). The effects of pH, sample flow rate and volume, elution conditions and co-existing ions on the recovery of the analyte were investigated. The results showed that silver could be adsorbed at pH 5.0 and eluted by 5.0 mL 2% thiourea in HNO3 (0.1 mol L-1). Under the optimized conditions, the adsorption capacity of modified silica gel was found to be 8.6 mg g-1 for silver. The detection limit of the proposed method was 1.0 ng mL-1 for silver with an enrichment factor of 18.7. The analytical result for the certified reference water sample (GBW08610) was in a good agreement with the certified value. The proposed method has also been successfully applied to the determination of trace silver in drinking water, well water, snow water and waste water with the recoveries for spiked samples between 94% and 105%.
author	XIANG,GUOQIANG LI,LULU JIANG,XIUMING HE,LIJUN FAN,LU
author_facet	XIANG,GUOQIANG LI,LULU JIANG,XIUMING HE,LIJUN FAN,LU
author_sort	XIANG,GUOQIANG
title	POLYELECTROLYTE MODIFIED SILICA GEL MICRO-COLUMN SOLID PHASE EXTRACTION FOR THE DETERMINATION OF SILVER IN ENVIRONMENTAL WATER SAMPLES BY FLAME ATOMIC ABSORPTION SPECTROMETRY
title_short	POLYELECTROLYTE MODIFIED SILICA GEL MICRO-COLUMN SOLID PHASE EXTRACTION FOR THE DETERMINATION OF SILVER IN ENVIRONMENTAL WATER SAMPLES BY FLAME ATOMIC ABSORPTION SPECTROMETRY
title_full	POLYELECTROLYTE MODIFIED SILICA GEL MICRO-COLUMN SOLID PHASE EXTRACTION FOR THE DETERMINATION OF SILVER IN ENVIRONMENTAL WATER SAMPLES BY FLAME ATOMIC ABSORPTION SPECTROMETRY
title_fullStr	POLYELECTROLYTE MODIFIED SILICA GEL MICRO-COLUMN SOLID PHASE EXTRACTION FOR THE DETERMINATION OF SILVER IN ENVIRONMENTAL WATER SAMPLES BY FLAME ATOMIC ABSORPTION SPECTROMETRY
title_full_unstemmed	POLYELECTROLYTE MODIFIED SILICA GEL MICRO-COLUMN SOLID PHASE EXTRACTION FOR THE DETERMINATION OF SILVER IN ENVIRONMENTAL WATER SAMPLES BY FLAME ATOMIC ABSORPTION SPECTROMETRY
title_sort	polyelectrolyte modified silica gel micro-column solid phase extraction for the determination of silver in environmental water samples by flame atomic absorption spectrometry
publisher	Sociedad Chilena de Química
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-97072013000400060
work_keys_str_mv	AT xiangguoqiang polyelectrolytemodifiedsilicagelmicrocolumnsolidphaseextractionforthedeterminationofsilverinenvironmentalwatersamplesbyflameatomicabsorptionspectrometry AT lilulu polyelectrolytemodifiedsilicagelmicrocolumnsolidphaseextractionforthedeterminationofsilverinenvironmentalwatersamplesbyflameatomicabsorptionspectrometry AT jiangxiuming polyelectrolytemodifiedsilicagelmicrocolumnsolidphaseextractionforthedeterminationofsilverinenvironmentalwatersamplesbyflameatomicabsorptionspectrometry AT helijun polyelectrolytemodifiedsilicagelmicrocolumnsolidphaseextractionforthedeterminationofsilverinenvironmentalwatersamplesbyflameatomicabsorptionspectrometry AT fanlu polyelectrolytemodifiedsilicagelmicrocolumnsolidphaseextractionforthedeterminationofsilverinenvironmentalwatersamplesbyflameatomicabsorptionspectrometry
_version_	1718445506929098752

POLYELECTROLYTE MODIFIED SILICA GEL MICRO-COLUMN SOLID PHASE EXTRACTION FOR THE DETERMINATION OF SILVER IN ENVIRONMENTAL WATER SAMPLES BY FLAME ATOMIC ABSORPTION SPECTROMETRY

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