NDLI: Improvement in the determination of traces of uranium in aqueous medium having high dissolved organic carbon and chloride ion by alpha-spectrometry

Content Provider	Springer Nature Link
Author	Singhal, R. K. Preetha, J. Karpe, Rupali Hema, P. Kumar, Ajay Joshi, V. M. Ranade, A. K. Hegde, A. G.
Copyright Year	2008
Abstract	During this work the determination of uranium in the range of μg·L$^{−1}$ to tens of μg·L$^{−1}$ was done by alpha-spectrometry after electroplating the aliquots of water sample using (NH$_{4}$)$_{2}$SO$_{4}$ as an electrolyte. In general, the determination of uranium by alpha-spectrometry needs its separation from other transuranics specially thorium. The process described here does not involve any sample digestion and radiochemical separation of uranium from other transuranics. In this method an aliquot (1 to 3 mL) of the sample was dried and dissolve in (NH$_{4}$)$_{2}$SO$_{4}$ and thereafter the sample was electroplated on a stainless steel (SS) planchet by using an electrochemical cell of special design. The proposed techniques have a distinct advantage over the determination of uranium by adsorptive stripping voltammetry (AdSV) in which uranium-chloranilic (2,5-dichloro-3,6-dihydroxy-1,4-benzoquinone) acid complex was used for concentrating the uranium from the solution. Since in the case of AdSv, the determination of uranium was not possible for samples having dissolved organic carbon (DOC) more than 15 mg·L$^{−1}$ and Cl$^{−}$ concentration is in the range of 40,000 μ·g$^{−1}$. In the case of spike experiments with $^{232}$U the recovery was observed in the range of 90–95% in aqueous medium having higher concentration of Cl$^{−}$ and DOC as indicated above.
Starting Page	301
Ending Page	306
Page Count	6
File Format	PDF
ISSN	02365731
Journal	Journal of Radioanalytical and Nuclear Chemistry
Volume Number	279
Issue Number	1
e-ISSN	15882780
Language	English
Publisher	Springer Netherlands
Publisher Date	2008-07-21
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Inorganic Chemistry Diagnostic Radiology Nuclear Physics, Heavy Ions, Hadrons Physical Chemistry Nuclear Chemistry
Content Type	Text
Resource Type	Article
Subject	Spectroscopy Pollution Health, Toxicology and Mutagenesis Radiology, Nuclear Medicine and Imaging Analytical Chemistry Public Health, Environmental and Occupational Health Nuclear Energy and Engineering

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