Determination of gold by high-resolution continuum source atomic absorption spectrometry with chemical vapor generation

Detalhes bibliográficos
Autor(a) principal: Krawczyk,Magdalena
Data de Publicação: 2013
Outros Autores: Matusiewicz,Henryk
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532013000500006
Resumo: The analytical potential of chemical vapor generation and high-resolution continuum source atomic absorption spectrometry (CVG HR-CS AAS) with quartz tube atomization in determination of gold was evaluated. The volatile species of gold were formed by reaction with sodium tetrahydroborate(III) in the presence of hydrochloric acid. The influence of didodecyldimethylammonium bromide (DDAB) and sodium diethyldithiocarbamate (DDTC) on the absorbance was investigated. The concentration limit of detection was 2.6 ng mL-1 for Au. The precision of measurement at 20 ng mL-1 of Au was 10% of the relative standard deviation (RSD). The accuracy of this method was validated by analyses of NRCC PCT-1a (Copper-Nickel Sulfide Concentrate with Noble Metals), NIST SRM 2710 (Montana Soil) and NIST SRM 1643e (Trace Element in Water) certified reference materials. The measured Au contents in these three reference materials were in satisfactory agreement with the certified values. This method was also applied for gold determination in coal fly ash, sediment and nickel alloy.
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spelling Determination of gold by high-resolution continuum source atomic absorption spectrometry with chemical vapor generationgoldchemical vapor generationcontinuum sourceatomic absorption spectrometryThe analytical potential of chemical vapor generation and high-resolution continuum source atomic absorption spectrometry (CVG HR-CS AAS) with quartz tube atomization in determination of gold was evaluated. The volatile species of gold were formed by reaction with sodium tetrahydroborate(III) in the presence of hydrochloric acid. The influence of didodecyldimethylammonium bromide (DDAB) and sodium diethyldithiocarbamate (DDTC) on the absorbance was investigated. The concentration limit of detection was 2.6 ng mL-1 for Au. The precision of measurement at 20 ng mL-1 of Au was 10% of the relative standard deviation (RSD). The accuracy of this method was validated by analyses of NRCC PCT-1a (Copper-Nickel Sulfide Concentrate with Noble Metals), NIST SRM 2710 (Montana Soil) and NIST SRM 1643e (Trace Element in Water) certified reference materials. The measured Au contents in these three reference materials were in satisfactory agreement with the certified values. This method was also applied for gold determination in coal fly ash, sediment and nickel alloy.Sociedade Brasileira de Química2013-05-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532013000500006Journal of the Brazilian Chemical Society v.24 n.5 2013reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20130096info:eu-repo/semantics/openAccessKrawczyk,MagdalenaMatusiewicz,Henrykeng2013-06-13T00:00:00Zoai:scielo:S0103-50532013000500006Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2013-06-13T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Determination of gold by high-resolution continuum source atomic absorption spectrometry with chemical vapor generation
title Determination of gold by high-resolution continuum source atomic absorption spectrometry with chemical vapor generation
spellingShingle Determination of gold by high-resolution continuum source atomic absorption spectrometry with chemical vapor generation
Krawczyk,Magdalena
gold
chemical vapor generation
continuum source
atomic absorption spectrometry
title_short Determination of gold by high-resolution continuum source atomic absorption spectrometry with chemical vapor generation
title_full Determination of gold by high-resolution continuum source atomic absorption spectrometry with chemical vapor generation
title_fullStr Determination of gold by high-resolution continuum source atomic absorption spectrometry with chemical vapor generation
title_full_unstemmed Determination of gold by high-resolution continuum source atomic absorption spectrometry with chemical vapor generation
title_sort Determination of gold by high-resolution continuum source atomic absorption spectrometry with chemical vapor generation
author Krawczyk,Magdalena
author_facet Krawczyk,Magdalena
Matusiewicz,Henryk
author_role author
author2 Matusiewicz,Henryk
author2_role author
dc.contributor.author.fl_str_mv Krawczyk,Magdalena
Matusiewicz,Henryk
dc.subject.por.fl_str_mv gold
chemical vapor generation
continuum source
atomic absorption spectrometry
topic gold
chemical vapor generation
continuum source
atomic absorption spectrometry
description The analytical potential of chemical vapor generation and high-resolution continuum source atomic absorption spectrometry (CVG HR-CS AAS) with quartz tube atomization in determination of gold was evaluated. The volatile species of gold were formed by reaction with sodium tetrahydroborate(III) in the presence of hydrochloric acid. The influence of didodecyldimethylammonium bromide (DDAB) and sodium diethyldithiocarbamate (DDTC) on the absorbance was investigated. The concentration limit of detection was 2.6 ng mL-1 for Au. The precision of measurement at 20 ng mL-1 of Au was 10% of the relative standard deviation (RSD). The accuracy of this method was validated by analyses of NRCC PCT-1a (Copper-Nickel Sulfide Concentrate with Noble Metals), NIST SRM 2710 (Montana Soil) and NIST SRM 1643e (Trace Element in Water) certified reference materials. The measured Au contents in these three reference materials were in satisfactory agreement with the certified values. This method was also applied for gold determination in coal fly ash, sediment and nickel alloy.
publishDate 2013
dc.date.none.fl_str_mv 2013-05-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532013000500006
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532013000500006
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.5935/0103-5053.20130096
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.24 n.5 2013
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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