Exploratory study on sequestration of some essential metals by indigo carmine food dye
Indigo carmine forms a stable complex with different ions, and the stability constant of the complexes were evaluated as log K equal to 5.75; 5.00; 4.89 and 3.89 for complexes with Cu(II), Ni(II), Co(II) and Zn(II) ions, respectively, in 0.1 mol L -1 carbonate buffer solution at pH 10. The interacti...
Published in: | Brazilian Journal of Pharmaceutical Sciences |
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2014
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Online Access: | http://acervodigital.unesp.br/handle/11449/71907 http://hdl.handle.net/11449/71907 https://doi.org/10.1590/S1984-82502010000400014 |
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ftunivesp:oai:acervodigital.unesp.br:11449/71907 2023-05-15T15:52:38+02:00 Exploratory study on sequestration of some essential metals by indigo carmine food dye Zanoni, Thalita Boldrin Cardoso, Arnaldo Alves Zanoni, Maria Valnice Boldrin Ferreira, Antonio Aparecido Pupim Universidade Estadual Paulista (UNESP) 2014-05-27T11:24:48Z http://acervodigital.unesp.br/handle/11449/71907 http://hdl.handle.net/11449/71907 https://doi.org/10.1590/S1984-82502010000400014 eng eng Brazilian Journal of Pharmaceutical Sciences Brazilian Journal of Pharmaceutical Sciences, v. 46, n. 4, p. 723-730, 2010. 1984-8250 2175-9790 http://hdl.handle.net/11449/71907 http://acervodigital.unesp.br/handle/11449/71907 doi:10.1590/S1984-82502010000400014 S1984-82502010000400014 2-s2.0-79956331262.pdf 2-s2.0-79956331262 orcid:0000-0002-2296-1393 http://dx.doi.org/10.1590/S1984-82502010000400014 info:eu-repo/semantics/openAccess Copper/determination Food dye/complexation Indigo carmine Metal sequestration Spectrophotometric analysis buffer carbonic acid cobalt copper ion food dye gluconate copper nickel zinc ion alkalinity chemical analysis chemical interaction chemical structure complex formation pH spectrophotometry stoichiometry outro 2014 ftunivesp https://doi.org/10.1590/S1984-82502010000400014 2021-07-18T08:41:32Z Indigo carmine forms a stable complex with different ions, and the stability constant of the complexes were evaluated as log K equal to 5.75; 5.00; 4.89 and 3.89 for complexes with Cu(II), Ni(II), Co(II) and Zn(II) ions, respectively, in 0.1 mol L -1 carbonate buffer solution at pH 10. The interaction between Cu(II) ions and indigo carmine (IC) in alkaline medium resulted in the formation of the Cu 2(IC) complex, measured by the spectrophotometric method, with a stoichiometric ratio between indigo carmine and metal ions of 2:1 (metal-ligand). The reported method has also been successfully tested for determination of copper in pharmaceutical compounds based on copper-gluconate without pre-treatment. Other/Unknown Material Carbonic acid Universidade Estadual Paulista São Paulo: Acervo Digital da UNESP / São Paulo State University Brazilian Journal of Pharmaceutical Sciences 46 4 723 730 |
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Universidade Estadual Paulista São Paulo: Acervo Digital da UNESP / São Paulo State University |
op_collection_id |
ftunivesp |
language |
English |
topic |
Copper/determination Food dye/complexation Indigo carmine Metal sequestration Spectrophotometric analysis buffer carbonic acid cobalt copper ion food dye gluconate copper nickel zinc ion alkalinity chemical analysis chemical interaction chemical structure complex formation pH spectrophotometry stoichiometry |
spellingShingle |
Copper/determination Food dye/complexation Indigo carmine Metal sequestration Spectrophotometric analysis buffer carbonic acid cobalt copper ion food dye gluconate copper nickel zinc ion alkalinity chemical analysis chemical interaction chemical structure complex formation pH spectrophotometry stoichiometry Zanoni, Thalita Boldrin Cardoso, Arnaldo Alves Zanoni, Maria Valnice Boldrin Ferreira, Antonio Aparecido Pupim Exploratory study on sequestration of some essential metals by indigo carmine food dye |
topic_facet |
Copper/determination Food dye/complexation Indigo carmine Metal sequestration Spectrophotometric analysis buffer carbonic acid cobalt copper ion food dye gluconate copper nickel zinc ion alkalinity chemical analysis chemical interaction chemical structure complex formation pH spectrophotometry stoichiometry |
description |
Indigo carmine forms a stable complex with different ions, and the stability constant of the complexes were evaluated as log K equal to 5.75; 5.00; 4.89 and 3.89 for complexes with Cu(II), Ni(II), Co(II) and Zn(II) ions, respectively, in 0.1 mol L -1 carbonate buffer solution at pH 10. The interaction between Cu(II) ions and indigo carmine (IC) in alkaline medium resulted in the formation of the Cu 2(IC) complex, measured by the spectrophotometric method, with a stoichiometric ratio between indigo carmine and metal ions of 2:1 (metal-ligand). The reported method has also been successfully tested for determination of copper in pharmaceutical compounds based on copper-gluconate without pre-treatment. |
author2 |
Universidade Estadual Paulista (UNESP) |
format |
Other/Unknown Material |
author |
Zanoni, Thalita Boldrin Cardoso, Arnaldo Alves Zanoni, Maria Valnice Boldrin Ferreira, Antonio Aparecido Pupim |
author_facet |
Zanoni, Thalita Boldrin Cardoso, Arnaldo Alves Zanoni, Maria Valnice Boldrin Ferreira, Antonio Aparecido Pupim |
author_sort |
Zanoni, Thalita Boldrin |
title |
Exploratory study on sequestration of some essential metals by indigo carmine food dye |
title_short |
Exploratory study on sequestration of some essential metals by indigo carmine food dye |
title_full |
Exploratory study on sequestration of some essential metals by indigo carmine food dye |
title_fullStr |
Exploratory study on sequestration of some essential metals by indigo carmine food dye |
title_full_unstemmed |
Exploratory study on sequestration of some essential metals by indigo carmine food dye |
title_sort |
exploratory study on sequestration of some essential metals by indigo carmine food dye |
publishDate |
2014 |
url |
http://acervodigital.unesp.br/handle/11449/71907 http://hdl.handle.net/11449/71907 https://doi.org/10.1590/S1984-82502010000400014 |
genre |
Carbonic acid |
genre_facet |
Carbonic acid |
op_relation |
Brazilian Journal of Pharmaceutical Sciences Brazilian Journal of Pharmaceutical Sciences, v. 46, n. 4, p. 723-730, 2010. 1984-8250 2175-9790 http://hdl.handle.net/11449/71907 http://acervodigital.unesp.br/handle/11449/71907 doi:10.1590/S1984-82502010000400014 S1984-82502010000400014 2-s2.0-79956331262.pdf 2-s2.0-79956331262 orcid:0000-0002-2296-1393 http://dx.doi.org/10.1590/S1984-82502010000400014 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1590/S1984-82502010000400014 |
container_title |
Brazilian Journal of Pharmaceutical Sciences |
container_volume |
46 |
container_issue |
4 |
container_start_page |
723 |
op_container_end_page |
730 |
_version_ |
1766387757042630656 |