Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry sampling

Detalhes bibliográficos
Autor(a) principal: Borges, Aline Rocha
Data de Publicação: 2011
Outros Autores: Becker, Emilene M., Lequeux, Céline, Vale, Maria Goreti R., Ferreira, Sergio Luis Costa, Welz, Bernhard
Tipo de documento: Artigo
Idioma: por
Título da fonte: Repositório Institucional da UFBA
Texto Completo: http://www.repositorio.ufba.br/ri/handle/ri/5279
Resumo: Acesso restrito. Texto completo disponível no PORTAL de PERIÓDICOS da CAPES. p. 529-535.
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spelling Borges, Aline RochaBecker, Emilene M.Lequeux, CélineVale, Maria Goreti R.Ferreira, Sergio Luis CostaWelz, BernhardBorges, Aline RochaBecker, Emilene M.Lequeux, CélineVale, Maria Goreti R.Ferreira, Sergio Luis CostaWelz, Bernhard2012-01-30T16:14:58Z2011-040584-8547http://www.repositorio.ufba.br/ri/handle/ri/5279v. 66, n. 7Acesso restrito. Texto completo disponível no PORTAL de PERIÓDICOS da CAPES. p. 529-535.The determination of cadmium (Cd) in fertilizers is of major interest, as this element can cause growth problems in plants, and also affect animals and humans. High-resolution continuum source graphite furnace atomic absorption spectrometry (HR-CS GF AAS) with charge-coupled device (CCD) array detection overcomes several of the limitations encounteredwith conventional line source AAS, especially the problem of accurate background measurement and correction. In this work an analytical method has been developed to determine Cd in fertilizer samples by HR-CS GF AAS using slurry sampling. Both a mixture of 10 μg Pd+6 μg Mg in solution and 400 μg of iridium as permanent modifier have been investigated and aqueous standards were used for calibration. Pyrolysis and atomization temperatures were 600 °C and 1600 °C for the Pd-Mg modifier, and 500 °C and 1600 °C for Ir, respectively. The results obtained for Cd in the certified referencematerial NIST SRM695 (Trace Elements in Multi-Nutrient Fertilizer) of 16.7±1.3 μg g−1 and 16.4±0.75 μg g−1 for the Pd–Mg and Ir modifier, respectively, were statistically not different from the certified value of 16.9±0.2 μg g−1 on a 95% confidence level; however, the results obtained with the Ir modifier were significantly lower than those for the Pd–Mg modifier for most of the samples. The characteristic mass was 1.0 pg for the Pd–Mg modifier and 1.1 pg Cd for the Ir modifier, and the correlation coefficients (R2) of the calibration wereN0.99. The instrumental limits of detection were 7.5 and 7.9 ng g−1, and the limits of quantification were 25 and 27 ng g−1 for Pd–Mg and Ir, respectively, based on a sample mass of 5 mg. The cadmium concentration in the investigated samples was between 0.07 and 5.5 μg g−1 Cd, and hence below the maximum value of 20 μg g−1 Cd permitted by Brazilian legislation.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-01-30T16:14:57Z No. of bitstreams: 1 C__Documents and Settings_rep...t.default_Cache_2_09_B7AD5d01.pdf: 166059 bytes, checksum: edfd1817a0e8cb830a054f6d83342bd6 (MD5)Made available in DSpace on 2012-01-30T16:14:58Z (GMT). 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dc.title.pt_BR.fl_str_mv Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry sampling
dc.title.alternative.pt_BR.fl_str_mv Elsevier
title Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry sampling
spellingShingle Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry sampling
Borges, Aline Rocha
High-resolution continuum source graphite
furnace atomic absorption spectrometry
Cadmium determination
Slurry sampling
Fertilizer analysis
Modifiers
title_short Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry sampling
title_full Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry sampling
title_fullStr Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry sampling
title_full_unstemmed Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry sampling
title_sort Method development for the determination of cadmium in fertilizer samples using high-resolution continuum source graphite furnace atomic absorption spectrometry and slurry sampling
author Borges, Aline Rocha
author_facet Borges, Aline Rocha
Becker, Emilene M.
Lequeux, Céline
Vale, Maria Goreti R.
Ferreira, Sergio Luis Costa
Welz, Bernhard
author_role author
author2 Becker, Emilene M.
Lequeux, Céline
Vale, Maria Goreti R.
Ferreira, Sergio Luis Costa
Welz, Bernhard
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Borges, Aline Rocha
Becker, Emilene M.
Lequeux, Céline
Vale, Maria Goreti R.
Ferreira, Sergio Luis Costa
Welz, Bernhard
Borges, Aline Rocha
Becker, Emilene M.
Lequeux, Céline
Vale, Maria Goreti R.
Ferreira, Sergio Luis Costa
Welz, Bernhard
dc.subject.por.fl_str_mv High-resolution continuum source graphite
furnace atomic absorption spectrometry
Cadmium determination
Slurry sampling
Fertilizer analysis
Modifiers
topic High-resolution continuum source graphite
furnace atomic absorption spectrometry
Cadmium determination
Slurry sampling
Fertilizer analysis
Modifiers
description Acesso restrito. Texto completo disponível no PORTAL de PERIÓDICOS da CAPES. p. 529-535.
publishDate 2011
dc.date.issued.fl_str_mv 2011-04
dc.date.accessioned.fl_str_mv 2012-01-30T16:14:58Z
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://www.repositorio.ufba.br/ri/handle/ri/5279
dc.identifier.issn.none.fl_str_mv 0584-8547
dc.identifier.number.pt_BR.fl_str_mv v. 66, n. 7
identifier_str_mv 0584-8547
v. 66, n. 7
url http://www.repositorio.ufba.br/ri/handle/ri/5279
dc.language.iso.fl_str_mv por
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dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
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dc.source.pt_BR.fl_str_mv http://dx.doi.org/10.1016/j.sab.2011.04.004
dc.source.none.fl_str_mv reponame:Repositório Institucional da UFBA
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