Extraction and Preconcentration of dissolved dibutyl phosphoric acid (HDBP) from aqueous uranyl nitrate solutions for gas chromatographic analysis

With a view to mitigate the complexities associated with aqueous solubility of Organophosphorous solvent, accurate estimation of dissolved organic in aqueous streams assumes great importance. Present method employs solvent extraction using 10 % (v/v) mixture of benzyl alcohol-benzene (BBA) for selec...

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Bibliographic Details
Published in:Journal of radioanalytical and nuclear chemistry 2016-05, Vol.308 (2), p.609-615
Main Authors: Tripathi, S. C., Bindu, M., Rao, K. S.
Format: Article
Language:English
Subjects:
Benzene
Chemistry
Chemistry and Materials Science
Diagnostic Radiology
Hadrons
Heavy Ions
Inorganic Chemistry
Methylation
Nuclear Chemistry
Nuclear Physics
Phosphates
Phosphoric acid
Physical Chemistry
Uranium compounds
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Summary:With a view to mitigate the complexities associated with aqueous solubility of Organophosphorous solvent, accurate estimation of dissolved organic in aqueous streams assumes great importance. Present method employs solvent extraction using 10 % (v/v) mixture of benzyl alcohol-benzene (BBA) for selective enrichment/extraction of dissolved Dibutyl phosphosphoric acid (HDBP), the target analyte, in presence of tributyl phosphate from nitric acid solutions containing bulk amount of uranyl ions. The extracted HDBP after methylation is subjected to gas chromatographic analysis using thermal conductivity detector. A calibration plot of HDBP estimation in the concentration range of 10–100 ppm, yields a precision with RSD of ±5 %. Graphical Abstract
ISSN:0236-5731
1588-2780
DOI:10.1007/s10967-015-4413-x