赣南某钨矿区土壤重金属污染生态风险评价
Ecological risk assessment of heavy metals pollution in a tungsten mine soil in south of Jiangxi Province
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摘要: 对赣南某钨矿区及周边农田土壤重金属的污染进行调查，分析了2个尾矿堆积区及17个农田采样区土壤中重金属Pb、Cr、Mn、Zn、Cu和Cd的总量和形态，采用潜在生态危害指数法和RAC风险评价法对研究区域土壤重金属的生态风险进行评价.结果表明，尾矿堆积区尾砂中6种重金属远远超过江西省土壤背景值和国家土壤环境质量二级标准，土壤重金属浓度水平分布表现为尾矿堆积区> 尾矿附近农田土壤> 矿区周边农田土壤.形态分析结果显示矿区农田土壤中6种重金属主要以可还原态、可氧化态和残渣态存在，尾矿附近农田土壤重金属Pb、Mn、Zn和Cd酸溶态占比均大于10%，具有较强的生物有效性.潜在生态危害指数评价表明研究区域表层（0—20 cm）和中层（20—40 cm）土壤存在极强的重金属生态危害，Cd是土壤重金属潜在生态风险主要的贡献因子.RAC风险评价结果表明，尾矿附近农田0—40 cm土壤中Zn和Cd存在的生态风险较大，而矿区周边农田0—40 cm土壤中Cd和Mn存在的生态风险相对较大.综合基于重金属总量分析的潜在生态风险指数和基于重金属有效态的RAC评价结果，Cd、Zn和Mn的污染是研究区域土壤污染风险控制需要关注的重点.Abstract: The ecological risk of 6 heavy metals (Pb, Cr, Mn, Cu, Zn, and Cd) of contaminated soil was evaluated in a tungsten mine area located in Gannan area, Jiangxi province, China. Soil samples were collected from 2 tailings disposal sites and 17 farmland sites in the survey area. Contents and species of 6 heavy metals were analyzed, and ecological risk was assessment with the methods of potential ecological risk index and risk assessment code (RAC). The results indicate the contents of all 6 heavy metals in tailings disposal area were much higher than the background values of Jiangxi province soils and the secondary standard of soil environmental quality. The concentrations of heavy metals in different areas followed tailings sites> farmland sites nearby the tailings> farmland sites surrounding mining areas. According to the results of speciation analysis, the acid-soluble fractions of Pb, Mn, Zn, and Cd were over than 10% in all the farmland sites nearby the tailings, which would lead to high bioavailability. The potential ecological risk assessment showed that there were extremely high ecological risks in the top soils (0—20 cm) and 20—40 cm soils of the study area, and Cd was the main contribution factor. According to the analysis of RAC, the ecological risk of Zn and Cd dominated in 0—40 cm soils of farmland nearby the tailing, while the ecological risks of Cd and Mn were relatively high in 0—40 soils of farmland surrounding the mining area. Combined with the two assessment results, Cd, Zn and Mn pose higher potential biological risk than Pb, Cu and Cr in the study area.
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Key words:
- tungsten mine area /
- soil contamination /
- heavy metal /
- risk assessment
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[1] AOSTA J A, FAZ A, MARTINEZ M, et al. Multivariate statistical and GIS—based approach to evaluate heavy metals behaviour in mine sites for future reclamation[J]. Journal of Geochemical Exploration,2011, 109: 8-17. [2] 环境保护部,国土资源部. 全国土壤污染状况调查公报[N]. 中国环境报,2014-4-17. Ministry of Environmental Protection, Ministry of Land and Resources. Bulletin of the National Soil Pollution Survey[N].China Environmental News,2014-4 -17(in Chinese).
[3] WAHSHA M, BINI C, ARGESE E, et al. Heavy metals accumulation in willows growing on Spolic Technosols from the abandoned Imperina Valley mine in Italy[J]. Journal of Geochemical Exploration,2012, 123: 19-24. [4] YANG Y, LI H, PENG L, et al. Assessment of Pb and Cd in seed oils and meals and methodology of their extraction[J]. Food chemistry,2015, 197(Pt A): 482-488. [5] 佚名.中国钨矿的发展简史[J]. 西部资源,2012 (1):32. ANONYMOUS. A brief history of chinese tungsten ore[J].Western Resources, 2012 (1 ):32 (in Chinese).
[6] NOURI M, HADDIOUI A. Human and animal health risk assessment of metal contamination in soil and plants from Ait Ammar abandoned iron mine, Morocco[J]. Environmental Monitoring and Assessment,2016, 188(1): 1-12. [7] MONTERROSO C, RODRIGUEZ F, CHAVES R, et al. Heavy metal distribution in mine-soils and plants growing in a Pb/Zn-mining area in NW Spain[J]. Applied Geochemistry,2014, 44: 3-11. [8] WANG J, FENG X, ANDERSON C W, et al. Effect of cropping systems on heavy metal distribution and mercury fractionation in the Wanshan mining district, China: Implications for environmental management[J]. Environmental Toxicology & Chemistry,2014, 33(9): 2147-2155. [9] 苏耀明,陈志良,雷国建, 等.多金属矿区土壤重金属垂向污染特征及风险评估[J]. 生态环境学报,2016, 25(1): 130-134. SU Y M, CHEN Z L, LEI G J, et al. Vertical pollution characteristic and ecological risk assessment of heavy metal of soil profiles in polymetallic ore mine[J]. Ecology and Environmental Sciences, 2016, 25(1): 130-134(in Chinese).
[10] 于靖,张华,蔡永兵, 等.金矿污染河流的水体和沉积物中重金属分布特征及生态风险评价[J]. 环境污染与防治,2015, 37(12): 1-9. YU J, ZHANG H, CAI Y B, et al. Distribution and ecological risk of heavy metals in water and sediments of a river polluted by gold mining[J].Environmental Pollution and Control,2015, 37(12): 1-9(in Chinese).
[11] 赵永红,张静,周丹, 等.赣南某钨矿区土壤重金属污染状况研究[J]. 中国环境科学,2015, 35(8): 2477-2484. ZHAO Y H, ZHANG J, ZHOU D, et al.Mixed heavy metals contamination of tungsten mine area soil in south of Jiangxi Province[J]. China Environmental Science,2015, 35(8): 2477-2484(in Chinese).
[12] 陈明,杨涛,徐慧, 等.赣南某钨矿区土壤中Cd、Pb的形态特征及生态风险评价[J]. 环境化学,2015, 34(12): 2257-2262. CHEN M,YANG T,XU H,et al. Distribution characteristics and ecological risk assessment of heavy metals Cd and Pb in soils around a tungsten mine of Gannan[J].Environmental Chemistry, 2015, 34(12): 2257-2262(in Chinese).
[13] 窦智勇,程建华,周平, 等.基于总量及有效态的铜陵矿区农田土壤重金属生态风险评价[J]. 环境污染与防治,2015, 37(11): 6-10. DOU Z Y, CHENG J H, ZHOU P, et al. Eologocal risk assessment based on total and available content of heavy metals in farmland soil of Tongling mining area[J]. Environmental Pollution and Control, 2015, 37(11): 6-10(in Chinese).
[14] 王婕,刘桂建,方婷, 等.基于污染负荷指数法评价淮河(安徽段)底泥中重金属污染研究[J]. 中国科学技术大学学报,2013, 43(2): 97-103. WANG J, LIU G J, FANG T, et al. Assessent of pollution characteristics of heavy metals in the sediments of Huaihe River (Anhui Section) by pollution load index[J]. Journal of University of Science and Technology of China, 2013, 43(2): 97-103(in Chinese).
[15] 陈岩,季宏兵,朱先芳, 等.北京市得田沟金矿和崎峰茶金矿周边土壤重金属形态分析和潜在风险评价[J]. 农业环境科学学报,2012, 31(11): 97-103. CHEN Y, JI H B, ZHU X F, et al. Fraction distribution and risk assessment of heavy metals in soils around the gold mine of Detiangou-Qifengcha,Beijing City,China[J].Journal of Agro-Environment Science,2012, 31(11): 97-103(in Chinese).
[16] 王崇臣,刘阳春,王鹏, 等.通惠河某段沉积物污染特征研究与评价[J]. 环境科学与技术,2011,34(7): 186-190. WANG C C, LIU Y C, WANG P, et al. Characteristics of sediments polluted by heavy metals in a reach of Tonghui River[J]. Environmental Science & Technology, 2011,34(7): 186-190(in Chinese).
[17] [18] 范拴喜.宝鸡市长青镇冶炼厂周边居住区土壤重金属污染特征与风险评估[J]. 环境污染与防治,2015, 37(9): 46-54. FAN S X. Pollution and health risk assessment of heavy metals in soil neighborhoods around a smelter in Changqing town of Baoji city[J].Environmental Pollution and Control,2015, 37(9): 46-54(in Chinese).
[19] HAKANSON L. An ecological risk index for aquatic pollution control. A sedimentological approach[J]. Waster Research,1980, 8(14): 975-1001. [20] GUO W. H, LIU X. B, LIU Z G, et al. Pollution and potential ecological risk evaluation of heavy metals in the sediments around Dongjiang Harbor, Tianjin[J]. Procedia Environmental Sciences,2010, 2: 729-736. [21] 胡国成,张丽娟,齐剑英,等.贵州万山汞矿周边土壤重金属污染特征及风险评价[J]. 生态环境学报,2015, 24(5): 879-885. HU G C, ZHANG L J, QI J Y, et al. Contaminant characteristics and risk assessment of heavy metals in soils from Wanshan Mercury Mine Area, Guizhou Province [J]. Ecology and Environmental Sciences, 2015, 24(5): 879-885(in Chinese).
[22] ZHU H. N, YUAN X. Z., ZENG G. M., et al. Ecological risk assessment of heavy metals in sediments of Xiawan Port based on modified potential ecological risk index[J]. Transactions of Nonferrous Metals Society of China,2012, 22(6): 1470-1477. [23] 黄莹,李永霞,高甫威, 等.小清河表层沉积物重污染区重金属赋存形态及风险评价[J]. 环境科学,2015, 36(6): 2046-2053. HUANG Y, LI Y X, GAO F W, et al.Speciation and risk assessment of heavy metals in surface sediments from the heavily polluted area of Xiaoqing River[J].Environmental Science,2015, 36(6): 2046-2053(in Chinese).
[24] INGVERTSEN S T, MARCUSSEN H, HOLM P E. Pollution and potential mobility of Cd, Ni and Pb in the sediments of a wastewater-receiving river in Hanoi, Vietnam[J]. Environmental monitoring and assessment,2013, 185(11): 9531-9548. [25] 高彦鑫,冯金国,唐磊, 等.密云水库上游金属矿区土壤中重金属形态分布及风险评价[J]. 环境科学,2012, 33(5): 1707-1717. GAO Y X, FENG J G, TANG L, et al.Fraction distribution and risk assessment of heavy metals in iron and gold mine soil of Miyun Reservoir upstream[J]. Chinese Journal of Environmental Science,2012, 33(5): 1707-1717(in Chinese).
[26] SUNDARAY S K, NAYAK B B, LIN S, et al. Geochemical speciation and risk assessment of heavy metals in the river estuarine sediments—a case study: Mahanadi basin, India[J]. Journal of hazardous materials,2011, 186(2-3): 1837-1846. [27] 孔明,董增林,晁建颖, 等.巢湖表层沉积物重金属生物有效性与生态风险评价[J]. 中国环境科学,2015, 35(4): 1223-1229. KONG M, DONG Z L, CHAO J Y, et al. Bioavailability and ecological risk assessment of heavy metals in surface sediments of Lake Chaohu[J]. China Environmental Science, 2015,35(4):1223-1229(in Chinese).
[28] 杜森,高祥照, 土壤分析技术规范第2版[M]. 北京: 中国农业出版社, 2006, 36-82. DU S, GAO X Z. Soil analysis technical specifications (Version 2)[M]. Beijing:China Agriculture Press,2006 , 36-82(in Chinese).
[29] 张芙蕖,蒋晶晶.三种土壤消解方法的对比研究[J].环境科学与管理,2008, 33(3): 132-134. ZHANG F Q, JIANG J J. The Comparison study on three methods of soil digestion[J].Environmental Science and Management, 2008, 33(3): 132-134(in Chinese).
[30] TESSIER A, CAMPBLL P G C, BISSON M. Sequential extraction procedure for the speciation of particulate trace metals[J]. Analytical Chemistry,1979, 51(7): 844-851. [31] 何纪力,徐光炎,朱慧民, 等. 江西省土壤环境背景值研究[M]. 北京:中国环境科学出版社, 2006. HE J L, XU G Y, ZHU H M, et al. Research on Jiangxi province soil environmental background value[M]. Beijing:China Environmental Science Press,2006(in Chinese). [32] GUPTA S K, CHABUKDHARA M, KUMAR P, et al. Evaluation of ecological risk of metal contamination in river Gomti, India: A biomonitoring approach[J]. Ecotoxicology and Environmental Safety,2014, 110: 49-55. [33] 柏建坤,李潮流,康世昌, 等.雅鲁藏布江中段表层沉积物重金属形态分布及风险评价[J]. 环境科学,2014, 35(9): 3346-3351. BAI J K, LI C L, KANG S C, et al. Chemical speciation and risk assessment of heavy metals in the middle part of Yarlung Zangbo surface sediments[J].Environmental Science,2014, 35(9): 3346-3351(in Chinese).
[34] 大余县地名办公室, 江西省大余县地名志[Z]. 邵武市: 福建省邵武市印刷厂, 1985. [35] 陈志凡,王岩松,段海静, 等.开封黑岗口引黄灌区稻麦轮作下农田土壤剖面重金属分布特征[J]. 中国生态农业学报,2012, 20(4): 480-487. CHEN Z F, WANG Y S, DUAN H J, et al. Vertical distribution characteristics of heavy metals in agricultural soil profiles under rice-wheat system in Heigangkou Yellow River Irrigation Region[J]. Chinese Journal of Eco-Agriculture,2012, 20(4): 480-487(in Chinese).
[36] 谢博文,王艺,赵晟雯, 等.土壤重金属污染研究综述[J]. 广州化工,2016, 44(1): 21-24. XIE B W, WANG Y, ZHAO S W, et al. Review of soil heavy metal pollution[J]. Guangzhou Chemical Industry, 2016,44(1): 21-24(in Chinese).
[37] 李芳柏,王旭刚,周顺桂, 等.红壤胶体铁氧化物界面有机氯的非生物转化研究进展[J]. 生态环境,2006, 15(5): 1343-1351. LI F B, WANG X G, ZHOU S G, et al. Reviews on abiotic transformation of organchlorines on the interface of iron oxides and water in red soil colloids[J]. Ecology and Environment,2006, 15(5): 1343-1351(in Chinese).
[38] 阮从海,杨彦.太湖流域某典型农业区不同形态土壤重金属的生物有效性研究[J]. 安徽农业科学,2013, 41(3): 1079-1084. RUAN C H, YANG Y. Study on bioavailability of different forms of heavy metals in a typical agricultural soil of Taihu Lake basin[J]. Journal of Anhui Agricultural Sciences,2013, 41(3): 1079-1084(in Chinese).
[39] WANG L, LONG X X, CHONG Y X, et al. Potential risk assessment of heavy metals in sediments during the denitrification process enhanced by calcium nitrate addition: Effect of AVS residual[J]. Ecological Engineering,2016, 87: 333-339. [40] 洪涛,谢运球,赵一, 等.林口硫铁矿冶炼区土壤重金属垂向分布及其影响因素[J]. 贵州农业科学,2015, 43(12): 90-94. HONG T, XIE Y Q, ZHAO Y, et al. Vertical distribution characteristics of soil heavy metals and its influence factors in Linkou pyrite smelting area[J]. Guizhou Agricultural Sciences, 2015, 43(12): 90-94(in Chinese).
[41] 王森. 矿区下游土壤典型重金属的积累规律研究[D]. 杭州: 浙江大学, 2014. WANG S. Accumulation characteristics of typical heavy metals in soils in mining downstream area[D].Hangzhou: Zhejiang University, 2014(in Chinese). [42] 张晨晨,胡恭任,于瑞莲, 等.晋江感潮河段沉积物重金属的赋存形态与生物有效性[J]. 环境化学,2015, 34(3): 505-513. ZHANG C C, HU G R, YU R L, et al. Speciation and bioavailability of heavy metals in sediments from tidal reach of the Jinjiang River[J]. Environmental Chemistry, 2015, 34(3):505-513(in Chinese).
[43] LIU E F, SHEN J, LIU X Q. Geochemical features of heavy metals in core sediments of northwestern Taihu Lake, China[J]. Chinese Journal of Geochemistry,2005, 24(1): 73-81. [44] 陆泗进,王业耀,何立环.会泽某铅锌矿周边农田土壤重金属生态风险评价[J]. 生态环境学报,2014, 23(11): 1832-1838. LU S J, WANG Y Y, HE L H. Heavy Metal pollution and ecological risk assessment of the paddysoils around a Pb-Zn mine in Huize Country [J]. Ecology and Environmental Sciences, 2014, 23(11): 1832-1838(in Chinese).
[45] 王鹏. 北京某公路两侧土壤重金属污染现状及风险评价研究[D]. 北京:北京建筑大学, 2014. WANG P. Research on pollution situate and evaluation of heavy metal pollution in the soil sampled from a road in Beijing[D]. Beijing:Beijing University of Architecture,2014(in Chinese). -
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