Extração/pré-concentração de íons cobre no ponto nuvem explorando a formação de complexos com DMIT [4,5-dimercapto-1,3-ditiol-2-tionato]
The present study proposes a method for cloud point preconcentration of copper ions at pH 2.0 based on complexes formed with [4,5-dimercapto-1,3-dithyol-2-thionate] and subsequent determination by flame atomic absorption spectrometry (FAAS). Under optimal analytical conditions, the method provided l...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Química
2012-01-01
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| Series: | Química Nova |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000800020&lng=en&tlng=en |
| _version_ | 1819144336225337344 |
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| author | Bruna Fabrin Somera Fernanda Midori de Oliveira Wagner José Barreto Sônia Regina Giancoli Barreto César Ricardo Teixeira Tarley |
| author_facet | Bruna Fabrin Somera Fernanda Midori de Oliveira Wagner José Barreto Sônia Regina Giancoli Barreto César Ricardo Teixeira Tarley |
| author_sort | Bruna Fabrin Somera |
| collection | DOAJ |
| description | The present study proposes a method for cloud point preconcentration of copper ions at pH 2.0 based on complexes formed with [4,5-dimercapto-1,3-dithyol-2-thionate] and subsequent determination by flame atomic absorption spectrometry (FAAS). Under optimal analytical conditions, the method provided limits of detection of 0.84 and 0.45 µg L-1, by preconcentrating 12.0 and 24.0 mL of sample, respectively. The method was applied for copper determination in water samples, synthetic saliva, guarana powder, tea samples and soft drinks and the accuracy was assessed by analyzing the certified reference materials Dogfish Liver (DOLT-4) and Lobster Hepatopancreas (TORT-2). |
| first_indexed | 2024-12-22T12:40:31Z |
| format | Article |
| id | doaj.art-525dec0331e643d59cf21f079c754d0c |
| institution | Directory Open Access Journal |
| issn | 1678-7064 |
| language | English |
| last_indexed | 2024-12-22T12:40:31Z |
| publishDate | 2012-01-01 |
| publisher | Sociedade Brasileira de Química |
| record_format | Article |
| series | Química Nova |
| spelling | doaj.art-525dec0331e643d59cf21f079c754d0c2022-12-21T18:25:26ZengSociedade Brasileira de QuímicaQuímica Nova1678-70642012-01-013581600160510.1590/S0100-40422012000800020S0100-40422012000800020Extração/pré-concentração de íons cobre no ponto nuvem explorando a formação de complexos com DMIT [4,5-dimercapto-1,3-ditiol-2-tionato]Bruna Fabrin Somera0Fernanda Midori de Oliveira1Wagner José Barreto2Sônia Regina Giancoli Barreto3César Ricardo Teixeira Tarley4Universidade Estadual de LondrinaUniversidade Estadual de LondrinaUniversidade Estadual de LondrinaUniversidade Estadual de LondrinaUniversidade Estadual de LondrinaThe present study proposes a method for cloud point preconcentration of copper ions at pH 2.0 based on complexes formed with [4,5-dimercapto-1,3-dithyol-2-thionate] and subsequent determination by flame atomic absorption spectrometry (FAAS). Under optimal analytical conditions, the method provided limits of detection of 0.84 and 0.45 µg L-1, by preconcentrating 12.0 and 24.0 mL of sample, respectively. The method was applied for copper determination in water samples, synthetic saliva, guarana powder, tea samples and soft drinks and the accuracy was assessed by analyzing the certified reference materials Dogfish Liver (DOLT-4) and Lobster Hepatopancreas (TORT-2).http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000800020&lng=en&tlng=encloud point preconcentrationcopperDMIT [4,5-dimercapto-1,3-dithyol-2-thionate] |
| spellingShingle | Bruna Fabrin Somera Fernanda Midori de Oliveira Wagner José Barreto Sônia Regina Giancoli Barreto César Ricardo Teixeira Tarley Extração/pré-concentração de íons cobre no ponto nuvem explorando a formação de complexos com DMIT [4,5-dimercapto-1,3-ditiol-2-tionato] Química Nova cloud point preconcentration copper DMIT [4,5-dimercapto-1,3-dithyol-2-thionate] |
| title | Extração/pré-concentração de íons cobre no ponto nuvem explorando a formação de complexos com DMIT [4,5-dimercapto-1,3-ditiol-2-tionato] |
| title_full | Extração/pré-concentração de íons cobre no ponto nuvem explorando a formação de complexos com DMIT [4,5-dimercapto-1,3-ditiol-2-tionato] |
| title_fullStr | Extração/pré-concentração de íons cobre no ponto nuvem explorando a formação de complexos com DMIT [4,5-dimercapto-1,3-ditiol-2-tionato] |
| title_full_unstemmed | Extração/pré-concentração de íons cobre no ponto nuvem explorando a formação de complexos com DMIT [4,5-dimercapto-1,3-ditiol-2-tionato] |
| title_short | Extração/pré-concentração de íons cobre no ponto nuvem explorando a formação de complexos com DMIT [4,5-dimercapto-1,3-ditiol-2-tionato] |
| title_sort | extracao pre concentracao de ions cobre no ponto nuvem explorando a formacao de complexos com dmit 4 5 dimercapto 1 3 ditiol 2 tionato |
| topic | cloud point preconcentration copper DMIT [4,5-dimercapto-1,3-dithyol-2-thionate] |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422012000800020&lng=en&tlng=en |
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