Copper, zinc and manganese determination in saline samples employing faas after separation and preconcentration on Amberlite XAD-7 and Dowex 1x-8 loaded with Alizarin Red S
| Autor(a) principal: | |
|---|---|
| Data de Publicação: | 2004 |
| Outros Autores: | , , , |
| Tipo de documento: | Artigo |
| Idioma: | eng |
| Título da fonte: | Repositório Institucional da UFBA |
| Texto Completo: | http://www.repositorio.ufba.br/ri/handle/ri/5101 |
Resumo: | p. 212-218. |
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Korn, Maria das Graças AndradeSantos Junior, Aníbal de FreitasJaeger, Helena ValliSilva, Nívia Maria S.Costa, Antonio Celso SpinolaKorn, Maria das Graças AndradeSantos Junior, Aníbal de FreitasJaeger, Helena ValliSilva, Nívia Maria S.Costa, Antonio Celso Spinola2012-01-10T19:58:34Z2012-01-10T19:58:34Z20040103-5053http://www.repositorio.ufba.br/ri/handle/ri/5101v. 15, n. 2.p. 212-218.Two procedures have been proposed and compared for separation and preconcentration of trace amounts of manganese, copper, and zinc in saline samples. The procedures are based in the use of Amberlite XAD-7 and an anion-exchanger Dowex 1X8–50 loaded with Alizarin Red S (ARS). In order to obtain quantitative recoveries of metal ions, various experimental parameters such as pH, shaking time, sample volume, amounts of solid phase, effects of concomitants, capacity and cations desorptions from solid phases were optimized. For Amberlite XAD-7 impregnated with ARS (XAD 7-ARS), Mn, Cu, and Zn were quantitatively retained, in the pH range 8.5-10.0, by using 0.50 g of solid phase, stirring time of 5 min and a total mass up to 200 µg of each cation. The sorbed elements were subsequently eluted with 5 mL of 3 mol L-1 HNO3, with recovering over 95%, and a fifty-fold preconcentration factor for Zn and a ten-fold preconcentration factor for Mn and Cu were obtained. For Dowex 1X8–50 impregnated with ARS (Dowex-ARS), Cu and Mn were quantitatively retained in the pH range 8.1 to 9.0, and Zn pH 8.1, by using 0.75 g of solid phase, 90 min of stirring time and a total mass up to 50 µg of each cation. The sorbed elements were subsequently eluted with 20 mL of 2 mol L-1 HNO3, and a five-fold preconcentration factor to Cu and Zn was obtained. The precision of the procedure was determined by running 10 replicate samples, each one containing 250 µg L-1 of each element and the relative standard deviations were 0.2% (Cu), 0.4% (Mn), and 0.4% (Zn), to XAD 7-ARS and 0.3% (Cu), 0.5% (Mn), and 0.3% (Zn), to Dowex-ARS. The procedures were used for determining of Mn, Cu, and Zn in physiological solutions and seawater samples, from Salvador-Bahia. The analyte addition technique was used and the recoveries obtained (³ 95%) revealed that the proposed procedure shows good accuracy and precision.Submitted by JURANDI DE SOUZA SILVA (jssufba@hotmail.com) on 2012-01-10T19:58:34Z No. of bitstreams: 1 19936.pdf: 158639 bytes, checksum: 0b5ea51c475e6d267bd45eb460b5aa00 (MD5)Made available in DSpace on 2012-01-10T19:58:34Z (GMT). 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| dc.title.pt_BR.fl_str_mv |
Copper, zinc and manganese determination in saline samples employing faas after separation and preconcentration on Amberlite XAD-7 and Dowex 1x-8 loaded with Alizarin Red S |
| dc.title.alternative.pt_BR.fl_str_mv |
Journal of the Brazilian Chemical Society |
| title |
Copper, zinc and manganese determination in saline samples employing faas after separation and preconcentration on Amberlite XAD-7 and Dowex 1x-8 loaded with Alizarin Red S |
| spellingShingle |
Copper, zinc and manganese determination in saline samples employing faas after separation and preconcentration on Amberlite XAD-7 and Dowex 1x-8 loaded with Alizarin Red S Korn, Maria das Graças Andrade preconcentration Solid-liquid extraction Amberlite XAD-7 Dowex 1X8-50 Alizarin red S saline samples |
| title_short |
Copper, zinc and manganese determination in saline samples employing faas after separation and preconcentration on Amberlite XAD-7 and Dowex 1x-8 loaded with Alizarin Red S |
| title_full |
Copper, zinc and manganese determination in saline samples employing faas after separation and preconcentration on Amberlite XAD-7 and Dowex 1x-8 loaded with Alizarin Red S |
| title_fullStr |
Copper, zinc and manganese determination in saline samples employing faas after separation and preconcentration on Amberlite XAD-7 and Dowex 1x-8 loaded with Alizarin Red S |
| title_full_unstemmed |
Copper, zinc and manganese determination in saline samples employing faas after separation and preconcentration on Amberlite XAD-7 and Dowex 1x-8 loaded with Alizarin Red S |
| title_sort |
Copper, zinc and manganese determination in saline samples employing faas after separation and preconcentration on Amberlite XAD-7 and Dowex 1x-8 loaded with Alizarin Red S |
| author |
Korn, Maria das Graças Andrade |
| author_facet |
Korn, Maria das Graças Andrade Santos Junior, Aníbal de Freitas Jaeger, Helena Valli Silva, Nívia Maria S. Costa, Antonio Celso Spinola |
| author_role |
author |
| author2 |
Santos Junior, Aníbal de Freitas Jaeger, Helena Valli Silva, Nívia Maria S. Costa, Antonio Celso Spinola |
| author2_role |
author author author author |
| dc.contributor.author.fl_str_mv |
Korn, Maria das Graças Andrade Santos Junior, Aníbal de Freitas Jaeger, Helena Valli Silva, Nívia Maria S. Costa, Antonio Celso Spinola Korn, Maria das Graças Andrade Santos Junior, Aníbal de Freitas Jaeger, Helena Valli Silva, Nívia Maria S. Costa, Antonio Celso Spinola |
| dc.subject.por.fl_str_mv |
preconcentration Solid-liquid extraction Amberlite XAD-7 Dowex 1X8-50 Alizarin red S saline samples |
| topic |
preconcentration Solid-liquid extraction Amberlite XAD-7 Dowex 1X8-50 Alizarin red S saline samples |
| description |
p. 212-218. |
| publishDate |
2004 |
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2004 |
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2012-01-10T19:58:34Z |
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2012-01-10T19:58:34Z |
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0103-5053 |
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v. 15, n. 2. |
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0103-5053 v. 15, n. 2. |
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