<b>Determination of trace amounts of zinc by flame atomic absorption spectrometry after separation and preconcentration onto modified natural analcime zeolite loaded 2,3,5,6-tetra(2-pyridyl)pyrazine</b>
Zinc ions were separated by solid phase extraction onto modified natural analcime zeolite loaded with 2,3,5,6-tetra(2-pyridyl)pyrazine (TPPZ). Extraction efficiency and the influence of sample matrix, flow rate, pH, and type and minimum amount of stripping eluent were investigated. Solutions of zinc...
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| Format: | Article |
| Language: | English |
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Chemical Society of Ethiopia
2010-04-01
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| Series: | Bulletin of the Chemical Society of Ethiopia |
| Subjects: | |
| Online Access: | http://ajol.info/index.php/bcse/article/view/52971 |
| _version_ | 1818944567137796096 |
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| author | A. Shokooh Saljooghi S.J. Fatemi D. Afzali |
| author_facet | A. Shokooh Saljooghi S.J. Fatemi D. Afzali |
| author_sort | A. Shokooh Saljooghi |
| collection | DOAJ |
| description | Zinc ions were separated by solid phase extraction onto modified natural analcime zeolite loaded with 2,3,5,6-tetra(2-pyridyl)pyrazine (TPPZ). Extraction efficiency and the influence of sample matrix, flow rate, pH, and type and minimum amount of stripping eluent were investigated. Solutions of zinc ions were passed through a glass column packed with 1.0 g of the sorbent at pH range of 3.8-4.4. The adsorbed zinc ions were eluted with 5.0 mL of 2.0 M HNO<sub>3</sub> at a flow rate of 1.0 mL min<sup>-1</sup>. The calibration curve using the preconcentration system was linear from 0.05 to 2.0 μg mL<sup>-1</sup> in final solution with a correlation coefficient of 0.9991. The relative standard deviation (RSD) for eight replicate determinations at 0.5 μg mL<sup>-1</sup> zinc was ± 0.92%. Detection limit was 2.9 ng mL<sup>-1</sup> in final solution and preconcentration factor was 170. The proposed method was successfully applied to the determination of zinc in various standard and water samples. |
| first_indexed | 2024-12-20T07:45:16Z |
| format | Article |
| id | doaj.art-456cceb95f67477ca76e08577d182c3e |
| institution | Directory Open Access Journal |
| issn | 1011-3924 1726-801X |
| language | English |
| last_indexed | 2024-12-20T07:45:16Z |
| publishDate | 2010-04-01 |
| publisher | Chemical Society of Ethiopia |
| record_format | Article |
| series | Bulletin of the Chemical Society of Ethiopia |
| spelling | doaj.art-456cceb95f67477ca76e08577d182c3e2022-12-21T19:48:00ZengChemical Society of EthiopiaBulletin of the Chemical Society of Ethiopia1011-39241726-801X2010-04-01241127132<b>Determination of trace amounts of zinc by flame atomic absorption spectrometry after separation and preconcentration onto modified natural analcime zeolite loaded 2,3,5,6-tetra(2-pyridyl)pyrazine</b>A. Shokooh SaljooghiS.J. FatemiD. AfzaliZinc ions were separated by solid phase extraction onto modified natural analcime zeolite loaded with 2,3,5,6-tetra(2-pyridyl)pyrazine (TPPZ). Extraction efficiency and the influence of sample matrix, flow rate, pH, and type and minimum amount of stripping eluent were investigated. Solutions of zinc ions were passed through a glass column packed with 1.0 g of the sorbent at pH range of 3.8-4.4. The adsorbed zinc ions were eluted with 5.0 mL of 2.0 M HNO<sub>3</sub> at a flow rate of 1.0 mL min<sup>-1</sup>. The calibration curve using the preconcentration system was linear from 0.05 to 2.0 μg mL<sup>-1</sup> in final solution with a correlation coefficient of 0.9991. The relative standard deviation (RSD) for eight replicate determinations at 0.5 μg mL<sup>-1</sup> zinc was ± 0.92%. Detection limit was 2.9 ng mL<sup>-1</sup> in final solution and preconcentration factor was 170. The proposed method was successfully applied to the determination of zinc in various standard and water samples.http://ajol.info/index.php/bcse/article/view/52971Zinc determinationSolid-phase extractionAnalcime zeolitePreconcentration2356-Tetra(2-pyridyl)pyrazine |
| spellingShingle | A. Shokooh Saljooghi S.J. Fatemi D. Afzali <b>Determination of trace amounts of zinc by flame atomic absorption spectrometry after separation and preconcentration onto modified natural analcime zeolite loaded 2,3,5,6-tetra(2-pyridyl)pyrazine</b> Bulletin of the Chemical Society of Ethiopia Zinc determination Solid-phase extraction Analcime zeolite Preconcentration 2 3 5 6-Tetra(2-pyridyl)pyrazine |
| title | <b>Determination of trace amounts of zinc by flame atomic absorption spectrometry after separation and preconcentration onto modified natural analcime zeolite loaded 2,3,5,6-tetra(2-pyridyl)pyrazine</b> |
| title_full | <b>Determination of trace amounts of zinc by flame atomic absorption spectrometry after separation and preconcentration onto modified natural analcime zeolite loaded 2,3,5,6-tetra(2-pyridyl)pyrazine</b> |
| title_fullStr | <b>Determination of trace amounts of zinc by flame atomic absorption spectrometry after separation and preconcentration onto modified natural analcime zeolite loaded 2,3,5,6-tetra(2-pyridyl)pyrazine</b> |
| title_full_unstemmed | <b>Determination of trace amounts of zinc by flame atomic absorption spectrometry after separation and preconcentration onto modified natural analcime zeolite loaded 2,3,5,6-tetra(2-pyridyl)pyrazine</b> |
| title_short | <b>Determination of trace amounts of zinc by flame atomic absorption spectrometry after separation and preconcentration onto modified natural analcime zeolite loaded 2,3,5,6-tetra(2-pyridyl)pyrazine</b> |
| title_sort | b determination of trace amounts of zinc by flame atomic absorption spectrometry after separation and preconcentration onto modified natural analcime zeolite loaded 2 3 5 6 tetra 2 pyridyl pyrazine b |
| topic | Zinc determination Solid-phase extraction Analcime zeolite Preconcentration 2 3 5 6-Tetra(2-pyridyl)pyrazine |
| url | http://ajol.info/index.php/bcse/article/view/52971 |
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