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Redistribution of fractions of zinc, cadmium, nickel, copper, and lead in contaminated calcareous soils treated with EDTA.
Arch Environ Contam Toxicol. 2007 Nov; 53(4):519-32.AE

Abstract

Effect of ethylene diamine tetraacetic acid (EDTA) on the fractionation of zinc (Zn), cadmium (Cd), nickel (Ni), copper (Cu), and lead (Pb) in contaminated calcareous soils was investigated. Soil samples containing variable levels of contamination, from 105.9 to 5803 mg/kg Zn, from 2.2 to 1361 mg/kg Cd, from 31 to 64.0 mg/kg Ni, from 24 to 84 mg/kg Cu, and from 109 to 24,850 mg/kg Pb, were subjected to EDTA treatment at different dosages of 0, 1.0, and 2.0 g/kg. Metals in the incubated soils were fractionated after 5 months by a sequential extraction procedure, in which the metal fractions were experimentally defined as exchangeable (EXCH), carbonate (CARB), Mn oxide (MNO), Fe oxide (FEO), organic matter (OM), and residual (RES) fractions. In contaminated soils without EDTA addition, Zn, Ni, Cu, and Pb were predominately present in the RES fraction, up to 60.0%, 32.3%, 41.1%, and 36.8%, respectively. In general, with the EDTA addition, the EXCH and CARB fractions of these metals increased dramatically while the OM fraction decreased. The Zn, Ni, Cu, and Pb were distributed mostly in RES, OM, FEO, and CARB fractions in contaminated soils, but Cd was found predominately in the CARB, MNO, and RES fractions. The OM fraction decreased with increasing amounts of EDTA. In the contaminated soils, EDTA removed some Pb, Zn, Cu, and Ni from MNO, FEO, and OM fractions and redistributed them into CARB and EXCH fractions. Based on the relative percent in the EXCH and CARB fractions, the order of solubility was Cd > Pb > Ni > Cu > Zn for contaminated soils, before adding of EDTA, and after adding of EDTA, the order of solubility was Pb > Cd > Zn > Ni > Cu. The risk of groundwater contamination will increase after applying EDTA and it needed to be used very carefully.

Authors+Show Affiliations

Department of Soil Science, College of Agriculture, Bu-Ali Sina University, Hamadan, Iran. Jalali@basu.ac.irNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

17657454

Citation

Jalali, Mohsen, and Zahra V. Khanlari. "Redistribution of Fractions of Zinc, Cadmium, Nickel, Copper, and Lead in Contaminated Calcareous Soils Treated With EDTA." Archives of Environmental Contamination and Toxicology, vol. 53, no. 4, 2007, pp. 519-32.
Jalali M, Khanlari ZV. Redistribution of fractions of zinc, cadmium, nickel, copper, and lead in contaminated calcareous soils treated with EDTA. Arch Environ Contam Toxicol. 2007;53(4):519-32.
Jalali, M., & Khanlari, Z. V. (2007). Redistribution of fractions of zinc, cadmium, nickel, copper, and lead in contaminated calcareous soils treated with EDTA. Archives of Environmental Contamination and Toxicology, 53(4), 519-32.
Jalali M, Khanlari ZV. Redistribution of Fractions of Zinc, Cadmium, Nickel, Copper, and Lead in Contaminated Calcareous Soils Treated With EDTA. Arch Environ Contam Toxicol. 2007;53(4):519-32. PubMed PMID: 17657454.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Redistribution of fractions of zinc, cadmium, nickel, copper, and lead in contaminated calcareous soils treated with EDTA. AU - Jalali,Mohsen, AU - Khanlari,Zahra V, Y1 - 2007/07/20/ PY - 2006/12/04/received PY - 2007/03/10/accepted PY - 2007/7/28/pubmed PY - 2007/12/7/medline PY - 2007/7/28/entrez SP - 519 EP - 32 JF - Archives of environmental contamination and toxicology JO - Arch Environ Contam Toxicol VL - 53 IS - 4 N2 - Effect of ethylene diamine tetraacetic acid (EDTA) on the fractionation of zinc (Zn), cadmium (Cd), nickel (Ni), copper (Cu), and lead (Pb) in contaminated calcareous soils was investigated. Soil samples containing variable levels of contamination, from 105.9 to 5803 mg/kg Zn, from 2.2 to 1361 mg/kg Cd, from 31 to 64.0 mg/kg Ni, from 24 to 84 mg/kg Cu, and from 109 to 24,850 mg/kg Pb, were subjected to EDTA treatment at different dosages of 0, 1.0, and 2.0 g/kg. Metals in the incubated soils were fractionated after 5 months by a sequential extraction procedure, in which the metal fractions were experimentally defined as exchangeable (EXCH), carbonate (CARB), Mn oxide (MNO), Fe oxide (FEO), organic matter (OM), and residual (RES) fractions. In contaminated soils without EDTA addition, Zn, Ni, Cu, and Pb were predominately present in the RES fraction, up to 60.0%, 32.3%, 41.1%, and 36.8%, respectively. In general, with the EDTA addition, the EXCH and CARB fractions of these metals increased dramatically while the OM fraction decreased. The Zn, Ni, Cu, and Pb were distributed mostly in RES, OM, FEO, and CARB fractions in contaminated soils, but Cd was found predominately in the CARB, MNO, and RES fractions. The OM fraction decreased with increasing amounts of EDTA. In the contaminated soils, EDTA removed some Pb, Zn, Cu, and Ni from MNO, FEO, and OM fractions and redistributed them into CARB and EXCH fractions. Based on the relative percent in the EXCH and CARB fractions, the order of solubility was Cd > Pb > Ni > Cu > Zn for contaminated soils, before adding of EDTA, and after adding of EDTA, the order of solubility was Pb > Cd > Zn > Ni > Cu. The risk of groundwater contamination will increase after applying EDTA and it needed to be used very carefully. SN - 0090-4341 UR - https://www.unboundmedicine.com/medline/citation/17657454/Redistribution_of_fractions_of_zinc_cadmium_nickel_copper_and_lead_in_contaminated_calcareous_soils_treated_with_EDTA_ L2 - https://dx.doi.org/10.1007/s00244-006-0252-7 DB - PRIME DP - Unbound Medicine ER -
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