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Assessing heavy metal pollution in paddy soil from coal mining area, Anhui, China.
Environ Monit Assess. 2019 Jul 29; 191(8):518.EM

Abstract

Heavy metal pollution in agricultural soil has negative impact on crop quality and eventually on human health. A total of 24 top soil samples were collected from paddy field near the Zhangji Coal Mine in Huainan City, Anhui Province. Seven heavy metals (Cu, Zn, As, Cr, Cd, Pb, and Ni) were selected to evaluate the pollution status through total content and chemical speciation, geo-accumulation index (Igeo), and risk assessment code (RAC) and investigate leaching behavior of heavy metals under simulated rainfall. The results of present study indicated that mining activities were responsible for elevated Cu and Cd in surrounding paddy soil. Based on the results of chemical speciation, most heavy metals were associated with the residual fraction, and the environmental risk of heavy metals in soil was sequenced as Pb > Cd > Ni > As > Zn > Cu > Cr. It revealed that Pb in soil would pose a higher environmental risk due to its higher reducible fraction, then followed by Cd, Ni, As, and Zn, which would pose a medium risk. The result of simulated rainfall leaching analysis showed that heavy metals could be categorized into two groups: concentrations of Cu, Ni, Cd, Zn, and Cr in the leachates displayed a continuous decrease tendency with the increase in accumulative simulated rain volume; whereas leachable tendency of As and Pb was enhanced with increasing leaching time and rain volume. Generally, the leaching percentage of heavy metals followed the sequence of As > Zn > Ni > Cd > Cr > Cu > Pb. More attention should be paid to the higher environmental risk of Pb and higher leaching percentage of As with regard to ecosystem safety and human health.

Authors+Show Affiliations

School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, Anhui, China. zhpaper@126.com.Agricultural Engineering Research Institute, Anhui Academy of Agricultural Sciences, Hefei, 230031, Anhui, China.School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, Anhui, China.School of Resources and Environment, Anhui Agricultural University, Hefei, 230036, Anhui, China.Department of Chemistry, University of Louisville, Louisville, KY, 40292, USA.Key Laboratory of Freshwater Aquaculture and Enhancement of Anhui Province, Fisheries Research Institute, Anhui Academy of Agricultural Sciences, Hefei, 230031, Anhui, China.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31359141

Citation

Li, Hui, et al. "Assessing Heavy Metal Pollution in Paddy Soil From Coal Mining Area, Anhui, China." Environmental Monitoring and Assessment, vol. 191, no. 8, 2019, p. 518.
Li H, Xu W, Dai M, et al. Assessing heavy metal pollution in paddy soil from coal mining area, Anhui, China. Environ Monit Assess. 2019;191(8):518.
Li, H., Xu, W., Dai, M., Wang, Z., Dong, X., & Fang, T. (2019). Assessing heavy metal pollution in paddy soil from coal mining area, Anhui, China. Environmental Monitoring and Assessment, 191(8), 518. https://doi.org/10.1007/s10661-019-7659-x
Li H, et al. Assessing Heavy Metal Pollution in Paddy Soil From Coal Mining Area, Anhui, China. Environ Monit Assess. 2019 Jul 29;191(8):518. PubMed PMID: 31359141.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Assessing heavy metal pollution in paddy soil from coal mining area, Anhui, China. AU - Li,Hui, AU - Xu,Wenjing, AU - Dai,Mingwei, AU - Wang,Zhiwen, AU - Dong,Xinju, AU - Fang,Ting, Y1 - 2019/07/29/ PY - 2019/05/20/received PY - 2019/07/15/accepted PY - 2019/7/31/entrez PY - 2019/7/31/pubmed PY - 2019/10/11/medline KW - Agricultural soil KW - Environmental assessment KW - Heavy metal SP - 518 EP - 518 JF - Environmental monitoring and assessment JO - Environ Monit Assess VL - 191 IS - 8 N2 - Heavy metal pollution in agricultural soil has negative impact on crop quality and eventually on human health. A total of 24 top soil samples were collected from paddy field near the Zhangji Coal Mine in Huainan City, Anhui Province. Seven heavy metals (Cu, Zn, As, Cr, Cd, Pb, and Ni) were selected to evaluate the pollution status through total content and chemical speciation, geo-accumulation index (Igeo), and risk assessment code (RAC) and investigate leaching behavior of heavy metals under simulated rainfall. The results of present study indicated that mining activities were responsible for elevated Cu and Cd in surrounding paddy soil. Based on the results of chemical speciation, most heavy metals were associated with the residual fraction, and the environmental risk of heavy metals in soil was sequenced as Pb > Cd > Ni > As > Zn > Cu > Cr. It revealed that Pb in soil would pose a higher environmental risk due to its higher reducible fraction, then followed by Cd, Ni, As, and Zn, which would pose a medium risk. The result of simulated rainfall leaching analysis showed that heavy metals could be categorized into two groups: concentrations of Cu, Ni, Cd, Zn, and Cr in the leachates displayed a continuous decrease tendency with the increase in accumulative simulated rain volume; whereas leachable tendency of As and Pb was enhanced with increasing leaching time and rain volume. Generally, the leaching percentage of heavy metals followed the sequence of As > Zn > Ni > Cd > Cr > Cu > Pb. More attention should be paid to the higher environmental risk of Pb and higher leaching percentage of As with regard to ecosystem safety and human health. SN - 1573-2959 UR - https://www.unboundmedicine.com/medline/citation/31359141/Assessing_heavy_metal_pollution_in_paddy_soil_from_coal_mining_area_Anhui_China_ DB - PRIME DP - Unbound Medicine ER -