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Heavy metal pollution and ecological risk assessment of the paddy soils near a zinc-lead mining area in Hunan.
Environ Monit Assess. 2015 Oct; 187(10):627.EM

Abstract

Soil pollution by Cd, Hg, As, Pb, Cr, Cu, and Zn was characterized in the area of the mining and smelting of metal ores at Guiyang, northeast of Hunan Province. A total of 150 topsoil (0-20 cm) samples were collected in May 2012 with a nominal density of one sample per 4 km(2). High concentrations of heavy metals especially, Cd, Zn, and Pb were found in many of the samples taken from surrounding paddy soil, indicating a certain extent of spreading of heavy metal pollution. Sequential extraction technique and risk assessment code (RAC) were used to study the mobility of chemical forms of heavy metals in the soils and their ecological risk. The results reveal that Cd represents a high ecological risk due to its highest percentage of the exchangeable and carbonate fractions. The metals of Zn and Cu pose a medium risk, and the rest of the metals represent a low environmental risk. The range of the potential ecological risk of soil calculated by risk index (RI) was 123.5~2791.2 and revealed a considerable-high ecological risk in study area especially in the neighboring and surrounding the mining activities area. Additionally, cluster analyses suggested that metals such as Pb, As, Hg, Zn, and Cd could be from the same sources probably related to the acidic drainage and wind transport of dust. Cluster analysis also clearly distinguishes the samples with similar characteristics according to their spatial distribution. The results could be used during the ecological risk screening stage, in conjunction with total concentrations and metal fractionation values to better estimate ecological risk.

Authors+Show Affiliations

China National Environmental Monitoring Centre, Beijing, 100012, China.China National Environmental Monitoring Centre, Beijing, 100012, China. yywang126@sina.com.College of Water Sciences, Beijing Normal University, Beijing, 100875, China.College of Water Sciences, Beijing Normal University, Beijing, 100875, China.

Pub Type(s)

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

Language

eng

PubMed ID

26373302

Citation

Lu, Sijin, et al. "Heavy Metal Pollution and Ecological Risk Assessment of the Paddy Soils Near a Zinc-lead Mining Area in Hunan." Environmental Monitoring and Assessment, vol. 187, no. 10, 2015, p. 627.
Lu S, Wang Y, Teng Y, et al. Heavy metal pollution and ecological risk assessment of the paddy soils near a zinc-lead mining area in Hunan. Environ Monit Assess. 2015;187(10):627.
Lu, S., Wang, Y., Teng, Y., & Yu, X. (2015). Heavy metal pollution and ecological risk assessment of the paddy soils near a zinc-lead mining area in Hunan. Environmental Monitoring and Assessment, 187(10), 627. https://doi.org/10.1007/s10661-015-4835-5
Lu S, et al. Heavy Metal Pollution and Ecological Risk Assessment of the Paddy Soils Near a Zinc-lead Mining Area in Hunan. Environ Monit Assess. 2015;187(10):627. PubMed PMID: 26373302.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Heavy metal pollution and ecological risk assessment of the paddy soils near a zinc-lead mining area in Hunan. AU - Lu,Sijin, AU - Wang,Yeyao, AU - Teng,Yanguo, AU - Yu,Xuan, Y1 - 2015/09/15/ PY - 2015/05/04/received PY - 2015/08/31/accepted PY - 2015/9/17/entrez PY - 2015/9/17/pubmed PY - 2016/4/6/medline KW - Potential ecological risk KW - Soil heavy metals KW - Zinc-lead mining area SP - 627 EP - 627 JF - Environmental monitoring and assessment JO - Environ Monit Assess VL - 187 IS - 10 N2 - Soil pollution by Cd, Hg, As, Pb, Cr, Cu, and Zn was characterized in the area of the mining and smelting of metal ores at Guiyang, northeast of Hunan Province. A total of 150 topsoil (0-20 cm) samples were collected in May 2012 with a nominal density of one sample per 4 km(2). High concentrations of heavy metals especially, Cd, Zn, and Pb were found in many of the samples taken from surrounding paddy soil, indicating a certain extent of spreading of heavy metal pollution. Sequential extraction technique and risk assessment code (RAC) were used to study the mobility of chemical forms of heavy metals in the soils and their ecological risk. The results reveal that Cd represents a high ecological risk due to its highest percentage of the exchangeable and carbonate fractions. The metals of Zn and Cu pose a medium risk, and the rest of the metals represent a low environmental risk. The range of the potential ecological risk of soil calculated by risk index (RI) was 123.5~2791.2 and revealed a considerable-high ecological risk in study area especially in the neighboring and surrounding the mining activities area. Additionally, cluster analyses suggested that metals such as Pb, As, Hg, Zn, and Cd could be from the same sources probably related to the acidic drainage and wind transport of dust. Cluster analysis also clearly distinguishes the samples with similar characteristics according to their spatial distribution. The results could be used during the ecological risk screening stage, in conjunction with total concentrations and metal fractionation values to better estimate ecological risk. SN - 1573-2959 UR - https://www.unboundmedicine.com/medline/citation/26373302/Heavy_metal_pollution_and_ecological_risk_assessment_of_the_paddy_soils_near_a_zinc_lead_mining_area_in_Hunan_ DB - PRIME DP - Unbound Medicine ER -