Cold vapor atomic absorption spectrometric determination of cadmium after solid phase extraction on modified TiO2 nanoparticles
Autor(a) principal: | |
---|---|
Data de Publicação: | 2014 |
Outros Autores: | , , |
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=S0103-50532014001100007 |
Resumo: | Cadmium was quantitatively adsorbed from aqueous sample onto a microcolumn packed with cadion immobilized on sodium dodecyl sulfate-coated TiO2 nanoparticles. The retained cadmium was eluted with 2.5 mol L-1 hydrochloric acid solution and measured by cold vapor atomic absorption spectrometry (CVAAS). The influences of different variables such as pH, sample and eluent flow rates, amount of the sorbent and volume of the sample on the recovery of cadmium were investigated. Under the optimum conditions, a sample volume of 200 mL resulted in a preconcentration factor of 100. The precision (RSD%, n = 8) at the 0.05 µg L-1 level of cadmium was 3.6% and the limit of detection based on three times the standard deviation of blank solution (3Sb) was 1.3 ng L-1. The method was successfully applied to the determination of cadmium in rice, fish, milk, and water samples. |
id |
SBQ-2_97bb9661f4f3a42b51370724f0c52eea |
---|---|
oai_identifier_str |
oai:scielo:S0103-50532014001100007 |
network_acronym_str |
SBQ-2 |
network_name_str |
Journal of the Brazilian Chemical Society (Online) |
repository_id_str |
|
spelling |
Cold vapor atomic absorption spectrometric determination of cadmium after solid phase extraction on modified TiO2 nanoparticlescadmiumsolid phase extractioncold vapor atomic absorption spectrometrycadionmodified TiO2 nanoparticlesCadmium was quantitatively adsorbed from aqueous sample onto a microcolumn packed with cadion immobilized on sodium dodecyl sulfate-coated TiO2 nanoparticles. The retained cadmium was eluted with 2.5 mol L-1 hydrochloric acid solution and measured by cold vapor atomic absorption spectrometry (CVAAS). The influences of different variables such as pH, sample and eluent flow rates, amount of the sorbent and volume of the sample on the recovery of cadmium were investigated. Under the optimum conditions, a sample volume of 200 mL resulted in a preconcentration factor of 100. The precision (RSD%, n = 8) at the 0.05 µg L-1 level of cadmium was 3.6% and the limit of detection based on three times the standard deviation of blank solution (3Sb) was 1.3 ng L-1. The method was successfully applied to the determination of cadmium in rice, fish, milk, and water samples.Sociedade Brasileira de Química2014-11-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014001100007Journal of the Brazilian Chemical Society v.25 n.11 2014reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.5935/0103-5053.20140179info:eu-repo/semantics/openAccessMoghaddam,Reza HafeziShabani,Ali Mohammad HajiDadfarnia,ShayesstehBaghban,Nedaeng2014-11-13T00:00:00Zoai:scielo:S0103-50532014001100007Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2014-11-13T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false |
dc.title.none.fl_str_mv |
Cold vapor atomic absorption spectrometric determination of cadmium after solid phase extraction on modified TiO2 nanoparticles |
title |
Cold vapor atomic absorption spectrometric determination of cadmium after solid phase extraction on modified TiO2 nanoparticles |
spellingShingle |
Cold vapor atomic absorption spectrometric determination of cadmium after solid phase extraction on modified TiO2 nanoparticles Moghaddam,Reza Hafezi cadmium solid phase extraction cold vapor atomic absorption spectrometry cadion modified TiO2 nanoparticles |
title_short |
Cold vapor atomic absorption spectrometric determination of cadmium after solid phase extraction on modified TiO2 nanoparticles |
title_full |
Cold vapor atomic absorption spectrometric determination of cadmium after solid phase extraction on modified TiO2 nanoparticles |
title_fullStr |
Cold vapor atomic absorption spectrometric determination of cadmium after solid phase extraction on modified TiO2 nanoparticles |
title_full_unstemmed |
Cold vapor atomic absorption spectrometric determination of cadmium after solid phase extraction on modified TiO2 nanoparticles |
title_sort |
Cold vapor atomic absorption spectrometric determination of cadmium after solid phase extraction on modified TiO2 nanoparticles |
author |
Moghaddam,Reza Hafezi |
author_facet |
Moghaddam,Reza Hafezi Shabani,Ali Mohammad Haji Dadfarnia,Shayessteh Baghban,Neda |
author_role |
author |
author2 |
Shabani,Ali Mohammad Haji Dadfarnia,Shayessteh Baghban,Neda |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Moghaddam,Reza Hafezi Shabani,Ali Mohammad Haji Dadfarnia,Shayessteh Baghban,Neda |
dc.subject.por.fl_str_mv |
cadmium solid phase extraction cold vapor atomic absorption spectrometry cadion modified TiO2 nanoparticles |
topic |
cadmium solid phase extraction cold vapor atomic absorption spectrometry cadion modified TiO2 nanoparticles |
description |
Cadmium was quantitatively adsorbed from aqueous sample onto a microcolumn packed with cadion immobilized on sodium dodecyl sulfate-coated TiO2 nanoparticles. The retained cadmium was eluted with 2.5 mol L-1 hydrochloric acid solution and measured by cold vapor atomic absorption spectrometry (CVAAS). The influences of different variables such as pH, sample and eluent flow rates, amount of the sorbent and volume of the sample on the recovery of cadmium were investigated. Under the optimum conditions, a sample volume of 200 mL resulted in a preconcentration factor of 100. The precision (RSD%, n = 8) at the 0.05 µg L-1 level of cadmium was 3.6% and the limit of detection based on three times the standard deviation of blank solution (3Sb) was 1.3 ng L-1. The method was successfully applied to the determination of cadmium in rice, fish, milk, and water samples. |
publishDate |
2014 |
dc.date.none.fl_str_mv |
2014-11-01 |
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=S0103-50532014001100007 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532014001100007 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.5935/0103-5053.20140179 |
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.25 n.11 2014 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 |
_version_ |
1750318176548159488 |