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Zinc Sorption in Sandy Soils from Central Vietnam as a Function of Soil Characteristics

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Verriest, Gaetan [UCL] Couder, Eléonore [UCL] Thai, Hoa Hoang Thi Bythell, Stephen [UCL] Iserentant, Anne [UCL] Givron, Claudine [UCL] Dufey, Joseph [UCL]

Zinc (Zn) sorption curves were established for 11 cultivated sandy soils from central Vietnam. Soil samples (10 g) were equilibrated with 5 mM calcium chloride (CaCl 2) solutions (50 mL) at five zinc chloride (ZnCl 2) concentrations (0 to 80 mg Zn L -1). The experimental sorption data were fitted with the Freundlich equation. The amounts of Zn sorbed by soil (Q Zn) at different Zn concentrations in the equilibrium solution (C Zn) were closely related to cation exchange capacity (CEC) and pH, that is, to the available exchange sites at given pH values. More specifically, an excellent correlation was found between Zn sorption and exchangeable calcium (Ca ex), which evidently also depends on CEC and pH. A unique equation was proposed to predict Q Zn from C Zn and Ca ex in the range of Zn loading covered in our research, that is, from traces to Q Zn ≈ 60 mg Zn kg -1. © 2012 Copyright Taylor and Francis Group, LLC.

Document type Article de périodique (Journal article) – Article de recherche
Publication date 2012
Language Anglais
Journal information "Communications in Soil Science and Plant Analysis" - Vol. 43, no. 6, p. 887-895 (2012)
Peer reviewed yes
Publisher Taylor & Francis Inc.
e-issn 1532-2416
issn 0010-3624
Publication status Publié
Affiliation UCL - SST/ELI - Earth and Life Institute
Links
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Bibliographic reference Verriest, Gaetan ; Couder, Eléonore ; Thai, Hoa Hoang Thi ; Bythell, Stephen ; Iserentant, Anne ; et. al. Zinc Sorption in Sandy Soils from Central Vietnam as a Function of Soil Characteristics. In: Communications in Soil Science and Plant Analysis, Vol. 43, no. 6, p. 887-895 (2012)
Permanent URL http://hdl.handle.net/2078.1/161404