Tags

Type your tag names separated by a space and hit enter

[Chemical speciations of heavy metals and their risk assessment in agricultural soils in a coal mining area from Xingren County, Guizhou Province, China.]
Ying Yong Sheng Tai Xue Bao. 2016 May; 27(5):1468-1478.YY

Abstract

In this study, total concentrations and chemical speciations of heavy metals (As, Cr, Pb, Zn, Cd, Hg, Cu and Ni) in 64 agricultural soil samples were determined to evaluate the level of contamination from a coal mining area in Xingren County, Guizhou Province. The single factor index, the Hkanson potential ecological risk index and the risk assessment code (RAC) were used for the evaluation of potential ecological and environmental risks in four main utilized types of soils (paddy soil, Coix lacryma-jobi soil, tobacco-growing soil and vegetable soil). The results demonstrated that the concentrations of heavy metals were significantly higher than their soil background values in Guizhou Province, with the exception of Zn. According to the evaluation results of the single factor index method, the soils were severely contaminated with As, Pb, Hg and Cu. And the chemical speciations of heavy metals significantly varied among the different utilized types of soils. As and Cd mainly existed in acid soluble fraction. Cr, Zn, Cu and Ni mainly existed in residual fraction. The existence of Pb was mainly in reducible fraction and residual fraction. And the content of Hg was distributed mainly in acid soluble fraction, reducible fraction and oxidizable fraction which accounted for about 55% of the total concentration. The bioavailability of heavy metals was characterized by the order of As(63.6%) > Hg(57.3%) > Cd(56.4%) > Pb(52.5%) > Cu (45.7%) > Zn (32.8%) > Ni (26.2%) > Cr (13.2%). The Hkanson potential ecological risk index (RI) suggested that the heavy metals were at considerable ecological risk and the ranking order was vegetable soil (505.19) > C. lacryma-jobi soil (486.06) > tobacco-growing soil〖JP2〗(475.33) > paddy soil (446.86). The risk assessment code (RAC) indicated that As was at high risk in the paddy soils, C. lacryma-jobi soils and tobacco-growing soils, while As was at medium risk in the vegetable soils. Cd and Hg were at medium risk, Cr, Pb, Zn, Cu and Ni were at low risk. Therefore, management measures must be taken to control contamination of As, Cd and Hg in this area.

Authors+Show Affiliations

Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China.Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China.Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China.Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China.Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China.Guizhou Provincial Key Laboratory for Information System of Mountainous Areas and Protection of Ecological Environment, Guizhou Normal University, Guiyang 550001, China.

Pub Type(s)

Journal Article

Language

chi

PubMed ID

29732808

Citation

Pang, Wen Pin, et al. "[Chemical Speciations of Heavy Metals and Their Risk Assessment in Agricultural Soils in a Coal Mining Area From Xingren County, Guizhou Province, China.]." Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology, vol. 27, no. 5, 2016, pp. 1468-1478.
Pang WP, Qin FX, Lyu YC, et al. [Chemical speciations of heavy metals and their risk assessment in agricultural soils in a coal mining area from Xingren County, Guizhou Province, China.]. Ying Yong Sheng Tai Xue Bao. 2016;27(5):1468-1478.
Pang, W. P., Qin, F. X., Lyu, Y. C., Li, Y. J., Li, G., & Li, X. L. (2016). [Chemical speciations of heavy metals and their risk assessment in agricultural soils in a coal mining area from Xingren County, Guizhou Province, China.]. Ying Yong Sheng Tai Xue Bao = the Journal of Applied Ecology, 27(5), 1468-1478. https://doi.org/10.13287/j.1001-9332.201605.009
Pang WP, et al. [Chemical Speciations of Heavy Metals and Their Risk Assessment in Agricultural Soils in a Coal Mining Area From Xingren County, Guizhou Province, China.]. Ying Yong Sheng Tai Xue Bao. 2016;27(5):1468-1478. PubMed PMID: 29732808.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Chemical speciations of heavy metals and their risk assessment in agricultural soils in a coal mining area from Xingren County, Guizhou Province, China.] AU - Pang,Wen Pin, AU - Qin,Fan Xin, AU - Lyu,Ya Chao, AU - Li,Ying Ju, AU - Li,Gang, AU - Li,Xin Li, PY - 2018/5/8/entrez PY - 2016/5/1/pubmed PY - 2016/5/1/medline KW - agricultural soil KW - chemical speciation KW - heavy metal KW - potential ecological risk index KW - risk assessment code method SP - 1468 EP - 1478 JF - Ying yong sheng tai xue bao = The journal of applied ecology JO - Ying Yong Sheng Tai Xue Bao VL - 27 IS - 5 N2 - In this study, total concentrations and chemical speciations of heavy metals (As, Cr, Pb, Zn, Cd, Hg, Cu and Ni) in 64 agricultural soil samples were determined to evaluate the level of contamination from a coal mining area in Xingren County, Guizhou Province. The single factor index, the Hkanson potential ecological risk index and the risk assessment code (RAC) were used for the evaluation of potential ecological and environmental risks in four main utilized types of soils (paddy soil, Coix lacryma-jobi soil, tobacco-growing soil and vegetable soil). The results demonstrated that the concentrations of heavy metals were significantly higher than their soil background values in Guizhou Province, with the exception of Zn. According to the evaluation results of the single factor index method, the soils were severely contaminated with As, Pb, Hg and Cu. And the chemical speciations of heavy metals significantly varied among the different utilized types of soils. As and Cd mainly existed in acid soluble fraction. Cr, Zn, Cu and Ni mainly existed in residual fraction. The existence of Pb was mainly in reducible fraction and residual fraction. And the content of Hg was distributed mainly in acid soluble fraction, reducible fraction and oxidizable fraction which accounted for about 55% of the total concentration. The bioavailability of heavy metals was characterized by the order of As(63.6%) > Hg(57.3%) > Cd(56.4%) > Pb(52.5%) > Cu (45.7%) > Zn (32.8%) > Ni (26.2%) > Cr (13.2%). The Hkanson potential ecological risk index (RI) suggested that the heavy metals were at considerable ecological risk and the ranking order was vegetable soil (505.19) > C. lacryma-jobi soil (486.06) > tobacco-growing soil〖JP2〗(475.33) > paddy soil (446.86). The risk assessment code (RAC) indicated that As was at high risk in the paddy soils, C. lacryma-jobi soils and tobacco-growing soils, while As was at medium risk in the vegetable soils. Cd and Hg were at medium risk, Cr, Pb, Zn, Cu and Ni were at low risk. Therefore, management measures must be taken to control contamination of As, Cd and Hg in this area. SN - 1001-9332 UR - https://www.unboundmedicine.com/medline/citation/29732808/[Chemical_speciations_of_heavy_metals_and_their_risk_assessment_in_agricultural_soils_in_a_coal_mining_area_from_Xingren_County_Guizhou_Province_China_] DB - PRIME DP - Unbound Medicine ER -