Homogeneous Liquid-Liquid Extraction of Uranium(VI) Using Tri-n-octylphosphine Oxide
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- GHIASVAND Ali Reza
- Departments of Chemistry, Lorestan University
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- MOHAGHEGHZADEH Elham
- Departments of Chemistry, Lorestan University
Bibliographic Information
- Other Title
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- Homogeneous Liquid Liquid Extraction of Uranium 6 Using Tri n octylphosphine Oxide
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Abstract
A simple and efficient method for the selective separation and preconcentration of uranium(VI) using homogeneous liquid-liquid extraction was developed. Tri-n-octylphosphine oxide (TOPO) and tri-n-butylphosphate (TBP) were investigated as complexing ligands, and perfluorooctanoate ion (PFOA-) was applied as a phase separator agent under strongly acidic conditions. Under the optimal conditions ([PFOA- = 1.7 × 10-3 M, [TOPO] = 5.4 × 10-4 M, [HNO3] = 0.3 M, [acetone] = 3.2% v/v) 10 µg of uranium in 40 ml aqueous phase could be extracted quantitatively into 8 µl of the sedimented phase. The maximum concentration factor was 5000-fold. However, an effort for the quantitative extraction using TBP was inefficient and the percent recovery was at most 56.7. The influence of the type and concentration of acid solution, optimum amount of the ligand, type and volume of the organic solvent, concentration of PFOA, volume of the aqueous sample and effect of different diverse ions on the extraction and determination of uranium(VI) were investigated. The proposed method was applied to the extraction and determination of uranium(VI) in natural water samples.
Journal
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- Analytical Sciences
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Analytical Sciences 20 (6), 917-919, 2004
The Japan Society for Analytical Chemistry
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Details 詳細情報について
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- CRID
- 1390001204258345600
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- NII Article ID
- 130004440941
- 10013104931
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- NII Book ID
- AA10500785
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- COI
- 1:CAS:528:DC%2BD2cXlt1Klt7g%3D
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- ISSN
- 13482246
- 09106340
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- NDL BIB ID
- 6970436
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- PubMed
- 15228110
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- PubMed
- CiNii Articles
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- Abstract License Flag
- Disallowed