Development of a Cloud-Point Extraction Method for Cobalt Determination in Natural Water Samples
A new, simple, and versatile cloud-point extraction (CPE) methodology has been developed for the separation and preconcentration of cobalt. The cobalt ions in the initial aqueous solution were complexed with 4-Benzylpiperidinedithiocarbamate, and Triton X-114 was added as surfactant. Dilution of the...
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| Format: | Article |
| Language: | English |
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Wiley
2013-01-01
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| Series: | Journal of Chemistry |
| Online Access: | http://dx.doi.org/10.1155/2013/615175 |
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| author | Mohammad Reza Jamali Mohammad Gholinezhad Saiedeh Balarostaghi Reyhaneh Rahnama Seyed Hojjat Allah Rahimi |
| author_facet | Mohammad Reza Jamali Mohammad Gholinezhad Saiedeh Balarostaghi Reyhaneh Rahnama Seyed Hojjat Allah Rahimi |
| author_sort | Mohammad Reza Jamali |
| collection | DOAJ |
| description | A new, simple, and versatile cloud-point extraction (CPE) methodology has been developed for the separation and preconcentration of cobalt. The cobalt ions in the initial aqueous solution were complexed with 4-Benzylpiperidinedithiocarbamate, and Triton X-114 was added as surfactant. Dilution of the surfactant-rich phase with acidified ethanol was performed after phase separation, and the cobalt content was measured by flame atomic absorption spectrometry. The main factors affecting CPE procedure, such as pH, concentration of ligand, amount of Triton X-114, equilibrium temperature, and incubation time were investigated and optimized. Under the optimal conditions, the limit of detection (LOD) for cobalt was 0.5 μg L-1, with sensitivity enhancement factor (EF) of 67. Calibration curve was linear in the range of 2–150 μg L-1, and relative standard deviation was 3.2% (c=100 μg L-1; n=10). The proposed method was applied to the determination of trace cobalt in real water samples with satisfactory analytical results. |
| format | Article |
| id | doaj-art-1105fc010fcc496cb3952e4cf6d517c2 |
| institution | Kabale University |
| issn | 2090-9063 2090-9071 |
| language | English |
| publishDate | 2013-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Chemistry |
| spelling | doaj-art-1105fc010fcc496cb3952e4cf6d517c22025-02-03T01:22:29ZengWileyJournal of Chemistry2090-90632090-90712013-01-01201310.1155/2013/615175615175Development of a Cloud-Point Extraction Method for Cobalt Determination in Natural Water SamplesMohammad Reza Jamali0Mohammad Gholinezhad1Saiedeh Balarostaghi2Reyhaneh Rahnama3Seyed Hojjat Allah Rahimi4Department of Chemistry, Payame Noor Universtiy, P.O. BOX 19395-3697, Tehran, IranDepartment of Chemistry, Payame Noor Universtiy, P.O. BOX 19395-3697, Tehran, IranDepartment of Chemistry, Payame Noor Universtiy, P.O. BOX 19395-3697, Tehran, IranDepartment of Chemistry, Payame Noor Universtiy, P.O. BOX 19395-3697, Tehran, IranDepartment of Chemistry, Payame Noor Universtiy, P.O. BOX 19395-3697, Tehran, IranA new, simple, and versatile cloud-point extraction (CPE) methodology has been developed for the separation and preconcentration of cobalt. The cobalt ions in the initial aqueous solution were complexed with 4-Benzylpiperidinedithiocarbamate, and Triton X-114 was added as surfactant. Dilution of the surfactant-rich phase with acidified ethanol was performed after phase separation, and the cobalt content was measured by flame atomic absorption spectrometry. The main factors affecting CPE procedure, such as pH, concentration of ligand, amount of Triton X-114, equilibrium temperature, and incubation time were investigated and optimized. Under the optimal conditions, the limit of detection (LOD) for cobalt was 0.5 μg L-1, with sensitivity enhancement factor (EF) of 67. Calibration curve was linear in the range of 2–150 μg L-1, and relative standard deviation was 3.2% (c=100 μg L-1; n=10). The proposed method was applied to the determination of trace cobalt in real water samples with satisfactory analytical results.http://dx.doi.org/10.1155/2013/615175 |
| spellingShingle | Mohammad Reza Jamali Mohammad Gholinezhad Saiedeh Balarostaghi Reyhaneh Rahnama Seyed Hojjat Allah Rahimi Development of a Cloud-Point Extraction Method for Cobalt Determination in Natural Water Samples Journal of Chemistry |
| title | Development of a Cloud-Point Extraction Method for Cobalt Determination in Natural Water Samples |
| title_full | Development of a Cloud-Point Extraction Method for Cobalt Determination in Natural Water Samples |
| title_fullStr | Development of a Cloud-Point Extraction Method for Cobalt Determination in Natural Water Samples |
| title_full_unstemmed | Development of a Cloud-Point Extraction Method for Cobalt Determination in Natural Water Samples |
| title_short | Development of a Cloud-Point Extraction Method for Cobalt Determination in Natural Water Samples |
| title_sort | development of a cloud point extraction method for cobalt determination in natural water samples |
| url | http://dx.doi.org/10.1155/2013/615175 |
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