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Mobility and sulfidization of heavy metals in sediments of a shallow eutrophic lake, Lake Taihu, China.
J Environ Sci (China). 2015 May 01; 31:1-11.JE

Abstract

The technique of DGT (diffusive gradients in thin films) using three diffusive gel thicknesses was applied to estimate the mobility and bioavailability of heavy metals in sediments and porewater of Lake Taihu, China. The DGT results showed significantly positive correlations between Co, Pb, Cd and Mn, and Ni and Fe concentrations in porewater. Cu and Zn showed a significantly negative correlation with Mn, due to Cu combination with carbonates and Zn derived from agricultural pollution, respectively. The rank order of average concentrations of Co, Ni and Cd at each station was DGT1.92>DGT0.78>DGT0.39, suggesting stronger resupply from sediments to porewater when using thicker diffusive gels. Comparing centrifugation and DGT measurements, Co, Ni and Cd are highly labile; Mn and Fe are moderately labile; and Cu, Zn and Pb are slightly labile. The variations of AVS concentrations in sediment cores indicate that metal sulfides in deeper layers are easily diffused into surface sediments.

Authors+Show Affiliations

State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China. Electronic address: huoshouliang@126.com.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China.Department Earth and Environmental Sciences, University of Kentucky, Lexington, KY 40506, USA.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China. Electronic address: xibeidou@263.net.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Science, Beijing 100012, China.

Pub Type(s)

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

Language

eng

PubMed ID

25968252

Citation

Huo, Shouliang, et al. "Mobility and Sulfidization of Heavy Metals in Sediments of a Shallow Eutrophic Lake, Lake Taihu, China." Journal of Environmental Sciences (China), vol. 31, 2015, pp. 1-11.
Huo S, Zhang J, Yeager KM, et al. Mobility and sulfidization of heavy metals in sediments of a shallow eutrophic lake, Lake Taihu, China. J Environ Sci (China). 2015;31:1-11.
Huo, S., Zhang, J., Yeager, K. M., Xi, B., Qin, Y., He, Z., & Wu, F. (2015). Mobility and sulfidization of heavy metals in sediments of a shallow eutrophic lake, Lake Taihu, China. Journal of Environmental Sciences (China), 31, 1-11. https://doi.org/10.1016/j.jes.2014.12.003
Huo S, et al. Mobility and Sulfidization of Heavy Metals in Sediments of a Shallow Eutrophic Lake, Lake Taihu, China. J Environ Sci (China). 2015 May 1;31:1-11. PubMed PMID: 25968252.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Mobility and sulfidization of heavy metals in sediments of a shallow eutrophic lake, Lake Taihu, China. AU - Huo,Shouliang, AU - Zhang,Jingtian, AU - Yeager,Kevin M, AU - Xi,Beidou, AU - Qin,Yanwen, AU - He,Zhuoshi, AU - Wu,Fengchang, Y1 - 2015/03/09/ PY - 2014/12/22/received PY - 2014/12/23/revised PY - 2014/12/24/accepted PY - 2015/5/14/entrez PY - 2015/5/15/pubmed PY - 2015/9/29/medline KW - DGT (diffusive gradients in thin films) KW - Heavy metals KW - Sulfidization process SP - 1 EP - 11 JF - Journal of environmental sciences (China) JO - J Environ Sci (China) VL - 31 N2 - The technique of DGT (diffusive gradients in thin films) using three diffusive gel thicknesses was applied to estimate the mobility and bioavailability of heavy metals in sediments and porewater of Lake Taihu, China. The DGT results showed significantly positive correlations between Co, Pb, Cd and Mn, and Ni and Fe concentrations in porewater. Cu and Zn showed a significantly negative correlation with Mn, due to Cu combination with carbonates and Zn derived from agricultural pollution, respectively. The rank order of average concentrations of Co, Ni and Cd at each station was DGT1.92>DGT0.78>DGT0.39, suggesting stronger resupply from sediments to porewater when using thicker diffusive gels. Comparing centrifugation and DGT measurements, Co, Ni and Cd are highly labile; Mn and Fe are moderately labile; and Cu, Zn and Pb are slightly labile. The variations of AVS concentrations in sediment cores indicate that metal sulfides in deeper layers are easily diffused into surface sediments. SN - 1001-0742 UR - https://www.unboundmedicine.com/medline/citation/25968252/Mobility_and_sulfidization_of_heavy_metals_in_sediments_of_a_shallow_eutrophic_lake_Lake_Taihu_China_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S1001-0742(15)00076-5 DB - PRIME DP - Unbound Medicine ER -