Abstract
The adsorption and complexing properties of modified adsorbents based on a maleic anhydride–styrene copolymer with respect to thorium(IV) ions were studied. Adsorbents containing fragments of 2‑amino-4-chloro-6-sulfophenol and 2,4-diamino-6-phenyltriazine-1,3,5 are used. The main quantitative characteristics of the adsorption of thorium are determined, and the optimal adsorption conditions are found. The concentration factor is not lower than 200 in extraction from 20 mL of a solution by 30 mg of the adsorbent. The recovery of radioactive thorium exceeds 95%. The developed procedure was applied to determine thorium(IV) in soil contaminated with oil.
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Bahmanova, F.N. Thorium(IV) Preconcentration by Chelate-Forming Adsorbents Based on a Maleic Anhydride–Styrene Copolymer. J Anal Chem 75, 1116–1119 (2020). https://doi.org/10.1134/S106193482009004X
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DOI: https://doi.org/10.1134/S106193482009004X