Preconcentration of trace amounts of uranium in water samples on octadecylsilica membrane disks modified by bis(2-ethylhexyl) hydrogen phosphate andits determination by alpha-spectrometry without electrodeposition

Authors
Yamini, Y Ashtari, P Khanchi, AR Ghannadi-Maragheh, M Shamsipur, M
Citation
Y. Yamini et al., Preconcentration of trace amounts of uranium in water samples on octadecylsilica membrane disks modified by bis(2-ethylhexyl) hydrogen phosphate andits determination by alpha-spectrometry without electrodeposition, J RAD NUCL, 242(3), 1999, pp. 783-786
Citations number
26
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
ISSN journal
02365731 → ACNP
Volume
242
Issue
3
Year of publication
1999
Pages
783 - 786
Database
ISI
SICI code
0236-5731(199912)242:3<783:POTAOU>2.0.ZU;2-C
Abstract
A simple and reliable method for the selective extraction and determination of uranium in water using octadecyl-bonded silica membrane disks modified with his (2-ethylhexyl) hydrogen phosphate and alpha-spectrometry is descri bed. Extraction efficiency and influence of sample matrix, optimum amount o f extractant, type and minimum amount of organic eluent and flow rates were evaluated. The limit of detection of the proposed method is 40 ng per 1000 ml. The influence of potential interfering cations in water samples on the recovery of U(VI) was investigated. The method was successfully applied to the extraction and determination of uranium in natural water.