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- W2769592805 abstract "Summary This paper presents a simple and accurate method for determination of uranium isotopes ( 234 U and 238 U ) in seawater samples using alpha spectrometry. Uranium is pre-concentrated from seawater samples via adsorption on hydrotalcite at pH 6.5. The absorbent is dissolved into 50 ml of 8M HNO 3 ; then filtered through a Dowex-1 column. U(VI) in the elution solution is reduced to U(IV) using zinc metal in 4M solution of HCl and then co-precipitated with LaF 3 . The chemical separation efficiency is found to be 97 . 12±2 . 68%, eliminating the need of using 232 U tracer in other published methods. This method is validated via comparison with results obtained using inductively coupled plasma mass spectrometry (ICP-MS) and neutron activation analysis (NAA) for three seawater samples." @default.
- W2769592805 created "2017-12-04" @default.
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- W2769592805 date "2013-10-01" @default.
- W2769592805 modified "2023-09-26" @default.
- W2769592805 title "Determination of 234U and 238U in seawater samples by alpha spectrometry after concentration of U(VI) onto hydrotalcite and co-precipitation with LaF3" @default.
- W2769592805 doi "https://doi.org/10.1524/ract.2013.2082" @default.
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