Selective Separation of Radiocesium from Complex Aqueous Matrices Using Dual Solid-Phase Extraction Systems.

Autor: Rahman IMM; Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima City, Fukushima 960-1296, Japan. Electronic address: immrahman@ipc.fukushima-u.ac.jp., Ye Y; Graduate School of Natural Science and Technology, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan., Alam MF; Graduate School of Symbiotic Systems Science and Technology, Fukushima University, 1 Kanayagawa, Fukushima City, Fukushima 960-1296, Japan; Institute of Nuclear Science and Technology, Atomic Energy Research Establishment, Ganakbari, Savar, Dhaka 1344, Bangladesh., Sawai H; Department of Industrial Engineering, National Institute of Technology, Ibaraki College, 866 Nakane, Hitachinaka City, Ibaraki 312-8508, Japan., Begum ZA; Institute of Environmental Radioactivity, Fukushima University, 1 Kanayagawa, Fukushima City, Fukushima 960-1296, Japan; Department of Civil Engineering, Southern University Bangladesh, Arefin Nagar, Bayezid Bostami, Chattogram 4210, Bangladesh., Furusho Y; GL Sciences Inc., 6-22-1 Nishi Shinjuku, Shinjuku-ku, Tokyo 163-1130, Japan., Ohta A; Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan., Hasegawa H; Institute of Science and Engineering, Kanazawa University, Kakuma, Kanazawa 920-1192, Japan. Electronic address: hhiroshi@se.kanazawa-u.ac.jp.
Jazyk: angličtina
Zdroj: Journal of chromatography. A [J Chromatogr A] 2021 Sep 27; Vol. 1654, pp. 462476. Date of Electronic Publication: 2021 Aug 14.
DOI: 10.1016/j.chroma.2021.462476
Abstrakt: The release of radiocesium (r-Cs) into natural aqueous systems is of concern because of its extended solubility as an alkaline metal ion and its facile incorporation into living beings. A technique for the selective separation of Cs from an aqueous matrix using dual solid-phase extraction (SPE) systems in a series is proposed in this paper. The SPEs equipped with chelates (Nobias Chelate-PA1 and Nobias Chelate-PB1), an ion-exchange resin (Nobias Ion SC-1), or macrocycles (MetaSEP AnaLig Cs-01 and MetaSEP AnaLig Cs-02) were evaluated in terms of selectivity and retention/recovery behavior toward Cs and other potentially competing ions (Li, Na, K, Rb, Ba, Ca, Mg, and Sr). The simulated solution of 133 Cs, a chemical analog of r-Cs, was used to optimize the separation process. Operating parameters such as pH (3-13), flow rate (0.2-5.0 mL min -1 ), and elution behavior (HCl, 0.1-5.0 mol L - 1 ) were optimized to ensure maximum removal of Cs from the aqueous matrices. The dual SPE system comprised Nobias Chelate-PB1 that minimized the competing impact of ions, while selective Cs retention was attained with MetaSEP AnaLig Cs-02. The proposed process was verified using real r-Cs-contaminated water from Fukushima, Japan, to observe the quantitative separation and preconcentration of r-Cs from the complex matrices.
Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2021 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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