DETERMINAÇÃO DE CÁDMIO EM BIJUTERIAS ORIUNDAS DA CHINA

Detalhes bibliográficos
Autor(a) principal: Pais,Ariane R.
Data de Publicação: 2018
Outros Autores: Dina,Larissa N., Alves,Evandro R., Rezende,Hélen C. de, Silva,Luís A. da, Alves,Valéria A.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422018001001218
Resumo: This study aimed to determine cadmium in low-cost jewelry from China. In the qualitative test the sulfide was used as precipitating agent. Due to the strong interference of copper in qualitative analysis, this element was removed by chemical reaction or electrolysis. This removal was of paramount importance for the qualitative analysis of Cd2+. Quantification of Cd2+ was performed by means of atomic absorption spectrometry. The concentration of Cd was ~ 30% (w/w) in one of the pieces. It is noteworthy that in a small universe of low-cost jewelry analyzed (four samples), such a high cadmium content found in one of them leads us to think that jewelry containing Cd are widespread among citizens. This work can be useful to approach the case study method for teaching Analytical Chemistry at the undergraduate level.
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spelling DETERMINAÇÃO DE CÁDMIO EM BIJUTERIAS ORIUNDAS DA CHINAcase studycadmiumlow-cost jewelryalloyanalytical chemistryThis study aimed to determine cadmium in low-cost jewelry from China. In the qualitative test the sulfide was used as precipitating agent. Due to the strong interference of copper in qualitative analysis, this element was removed by chemical reaction or electrolysis. This removal was of paramount importance for the qualitative analysis of Cd2+. Quantification of Cd2+ was performed by means of atomic absorption spectrometry. The concentration of Cd was ~ 30% (w/w) in one of the pieces. It is noteworthy that in a small universe of low-cost jewelry analyzed (four samples), such a high cadmium content found in one of them leads us to think that jewelry containing Cd are widespread among citizens. This work can be useful to approach the case study method for teaching Analytical Chemistry at the undergraduate level.Sociedade Brasileira de Química2018-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422018001001218Química Nova v.41 n.10 2018reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0100-4042.20170276info:eu-repo/semantics/openAccessPais,Ariane R.Dina,Larissa N.Alves,Evandro R.Rezende,Hélen C. deSilva,Luís A. daAlves,Valéria A.por2018-12-03T00:00:00Zoai:scielo:S0100-40422018001001218Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2018-12-03T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv DETERMINAÇÃO DE CÁDMIO EM BIJUTERIAS ORIUNDAS DA CHINA
title DETERMINAÇÃO DE CÁDMIO EM BIJUTERIAS ORIUNDAS DA CHINA
spellingShingle DETERMINAÇÃO DE CÁDMIO EM BIJUTERIAS ORIUNDAS DA CHINA
Pais,Ariane R.
case study
cadmium
low-cost jewelry
alloy
analytical chemistry
title_short DETERMINAÇÃO DE CÁDMIO EM BIJUTERIAS ORIUNDAS DA CHINA
title_full DETERMINAÇÃO DE CÁDMIO EM BIJUTERIAS ORIUNDAS DA CHINA
title_fullStr DETERMINAÇÃO DE CÁDMIO EM BIJUTERIAS ORIUNDAS DA CHINA
title_full_unstemmed DETERMINAÇÃO DE CÁDMIO EM BIJUTERIAS ORIUNDAS DA CHINA
title_sort DETERMINAÇÃO DE CÁDMIO EM BIJUTERIAS ORIUNDAS DA CHINA
author Pais,Ariane R.
author_facet Pais,Ariane R.
Dina,Larissa N.
Alves,Evandro R.
Rezende,Hélen C. de
Silva,Luís A. da
Alves,Valéria A.
author_role author
author2 Dina,Larissa N.
Alves,Evandro R.
Rezende,Hélen C. de
Silva,Luís A. da
Alves,Valéria A.
author2_role author
author
author
author
author
dc.contributor.author.fl_str_mv Pais,Ariane R.
Dina,Larissa N.
Alves,Evandro R.
Rezende,Hélen C. de
Silva,Luís A. da
Alves,Valéria A.
dc.subject.por.fl_str_mv case study
cadmium
low-cost jewelry
alloy
analytical chemistry
topic case study
cadmium
low-cost jewelry
alloy
analytical chemistry
description This study aimed to determine cadmium in low-cost jewelry from China. In the qualitative test the sulfide was used as precipitating agent. Due to the strong interference of copper in qualitative analysis, this element was removed by chemical reaction or electrolysis. This removal was of paramount importance for the qualitative analysis of Cd2+. Quantification of Cd2+ was performed by means of atomic absorption spectrometry. The concentration of Cd was ~ 30% (w/w) in one of the pieces. It is noteworthy that in a small universe of low-cost jewelry analyzed (four samples), such a high cadmium content found in one of them leads us to think that jewelry containing Cd are widespread among citizens. This work can be useful to approach the case study method for teaching Analytical Chemistry at the undergraduate level.
publishDate 2018
dc.date.none.fl_str_mv 2018-12-01
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=S0100-40422018001001218
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422018001001218
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.21577/0100-4042.20170276
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 Química Nova v.41 n.10 2018
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
_version_ 1750318119288569856

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