Journal
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY
Volume 329, Issue 1, Pages 115-125Publisher
SPRINGER
DOI: 10.1007/s10967-021-07785-x
Keywords
Thorium; Lanthanides; Uranium; Sequential extraction; 2; 3-H2ND; ICP-OES
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The study successfully utilized a specific extraction method to determine thorium, lanthanides, and uranium under different pH conditions, validating the effectiveness of the approach. Experimental results indicate that the method demonstrates a high degree of accuracy and precision when compared with other standard techniques.
Neutral complexes of thorium and lanthanides with 2,3-dihydroxynaphthalene and anionic complexes of uranium with the same chelating agent in presence of cetyltri-methylammonium ion are extracted into ethylacetate at the pH 5-6, 9-10 and 10-12 respectively. All these elements are then quantitatively stripped off into dilute acid solutions and then determined by ICP-OES. Certified Reference Materials like SY-2, SY-3, GSP-2 and a statistical paired 't' test are conducted for validation of the method. The results obtained for a set of rock and grab samples are compared with other standard techniques yielding high degree of accuracy and precision.
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