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Solid/solution partitioning and speciation of heavy metals in the contaminated agricultural soils around a copper mine in eastern Nanjing city, China.
J Hazard Mater. 2006 Apr 17; 131(1-3):19-27.JH

Abstract

Solid/solution partition coefficient (Kd) and speciation of soil heavy metals can be used for predicting their environmental risks. The Kd values and solution speciation of soil Cu, Cd and Zn were analyzed in 40 samples of contaminated agricultural soils around Jiuhua copper mine in eastern Nanjing city, China. The Kd ranges (and mean values) for soil Cu, Cd and Zn are 703-7418 (3453), 37.3-3963 (940) and 319-17965 (7244) L kg-1, respectively, showing a large variability both for metals and soils. The results of differential pulse anodic stripping voltammetry (DPASV) indicates that 95.6% solution Cu is bound to dissolved organic ligands. About half of the dissolved Zn is DPASV-labile at pH<6, while 92.1% solution Zn is in the form of organic complexes at pH>6. DPASV-labile Cd is ranged from 22.6 to 98.7% with the mean value of 56.3%. Multiple linear regressions indicate that Kd, the dissolved and DPASV-labile concentrations of Cd and Zn are mostly influenced by the soil solution pH with R2 of 0.50, 0.59 and 0.63, respectively for Cd, and 0.58, 0.72 and 0.64, respectively for Zn. Considering the second parameter of corresponding soil metal, the linear relationships of Kd with pH were improved with R2 of 0.70 and 0.73 for Cd and Zn, respectively. However, the solubility of soil Cu was insensitive to pH. Only SOC shows a weak relationship to the dissolved Cu with R2 of 0.21. As for its Kd, total soil Cu is the most significant factor. But for DPASV-labile Cu, no soil parameters were found to be good predictors.

Authors+Show Affiliations

State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16260085

Citation

Luo, Xiao-San, et al. "Solid/solution Partitioning and Speciation of Heavy Metals in the Contaminated Agricultural Soils Around a Copper Mine in Eastern Nanjing City, China." Journal of Hazardous Materials, vol. 131, no. 1-3, 2006, pp. 19-27.
Luo XS, Zhou DM, Liu XH, et al. Solid/solution partitioning and speciation of heavy metals in the contaminated agricultural soils around a copper mine in eastern Nanjing city, China. J Hazard Mater. 2006;131(1-3):19-27.
Luo, X. S., Zhou, D. M., Liu, X. H., & Wang, Y. J. (2006). Solid/solution partitioning and speciation of heavy metals in the contaminated agricultural soils around a copper mine in eastern Nanjing city, China. Journal of Hazardous Materials, 131(1-3), 19-27.
Luo XS, et al. Solid/solution Partitioning and Speciation of Heavy Metals in the Contaminated Agricultural Soils Around a Copper Mine in Eastern Nanjing City, China. J Hazard Mater. 2006 Apr 17;131(1-3):19-27. PubMed PMID: 16260085.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Solid/solution partitioning and speciation of heavy metals in the contaminated agricultural soils around a copper mine in eastern Nanjing city, China. AU - Luo,Xiao-San, AU - Zhou,Dong-Mei, AU - Liu,Xiao-Hong, AU - Wang,Yu-Jun, Y1 - 2005/11/02/ PY - 2005/06/25/received PY - 2005/09/12/revised PY - 2005/09/15/accepted PY - 2005/11/2/pubmed PY - 2006/10/20/medline PY - 2005/11/2/entrez SP - 19 EP - 27 JF - Journal of hazardous materials JO - J Hazard Mater VL - 131 IS - 1-3 N2 - Solid/solution partition coefficient (Kd) and speciation of soil heavy metals can be used for predicting their environmental risks. The Kd values and solution speciation of soil Cu, Cd and Zn were analyzed in 40 samples of contaminated agricultural soils around Jiuhua copper mine in eastern Nanjing city, China. The Kd ranges (and mean values) for soil Cu, Cd and Zn are 703-7418 (3453), 37.3-3963 (940) and 319-17965 (7244) L kg-1, respectively, showing a large variability both for metals and soils. The results of differential pulse anodic stripping voltammetry (DPASV) indicates that 95.6% solution Cu is bound to dissolved organic ligands. About half of the dissolved Zn is DPASV-labile at pH<6, while 92.1% solution Zn is in the form of organic complexes at pH>6. DPASV-labile Cd is ranged from 22.6 to 98.7% with the mean value of 56.3%. Multiple linear regressions indicate that Kd, the dissolved and DPASV-labile concentrations of Cd and Zn are mostly influenced by the soil solution pH with R2 of 0.50, 0.59 and 0.63, respectively for Cd, and 0.58, 0.72 and 0.64, respectively for Zn. Considering the second parameter of corresponding soil metal, the linear relationships of Kd with pH were improved with R2 of 0.70 and 0.73 for Cd and Zn, respectively. However, the solubility of soil Cu was insensitive to pH. Only SOC shows a weak relationship to the dissolved Cu with R2 of 0.21. As for its Kd, total soil Cu is the most significant factor. But for DPASV-labile Cu, no soil parameters were found to be good predictors. SN - 0304-3894 UR - https://www.unboundmedicine.com/medline/citation/16260085/Solid/solution_partitioning_and_speciation_of_heavy_metals_in_the_contaminated_agricultural_soils_around_a_copper_mine_in_eastern_Nanjing_city_China_ DB - PRIME DP - Unbound Medicine ER -