安徽庐江尾矿区河流重金属分布及污染评价
Heavy metal distribution and pollution evaluation of rivers along mining area in Lujiang County, Anhui Province
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摘要: 利用BCR法提取、分析安徽省庐江县失曹河与黄屯河沉积物重金属形态及含量,并开展污染程度和生态风险评价,分析了该地区受铁矿酸性矿山废水影响的河流重金属污染状况.结果表明,两条河流沉积物重金属Zn、Cu、Pb和Cd含量均值超过长江水系沉积物背景值.两条河流沉积物中Ni、Zn和Pb以残渣态为主,对环境危害较小;Cu以可氧化态为主,Mn和Cd以可还原态和残渣态为主,有潜在环境危害.相关分析表明,Cu的弱酸提取态含量受粒度影响较大.地累积指数(Igeo)评价结果表明,失曹河重金属Igeo顺序为Cu > Cd > Zn > Pb > Mn> Ni,Cu和Cd的Igeo均值分别为2.05和1.19,属中度和偏中污染;黄屯河重金属Igeo顺序为Cu > Cd > Pb > Zn > Ni> Mn,Cu的Igeo均值为2.25,属中度污染.潜在生态风险指数评价结果表明,两条河流沉积物重金属潜在生态风险强度为Cd > Cu > Pb > Ni > Zn > Mn.失曹河Cd和Cu的潜在生态风险系数(Eri)均值分别为162.81和57.03,属很强和中等级别;黄屯河Cd和Cu的Eri均值分别为80.62和46.97,属强和中等级别,表明Cd和Cu为主要风险因子.与铜陵受硫铁矿影响的河流对比表明,庐江受酸性矿山废水影响河流沉积物的金属含量相对较低,污染相对较轻.Abstract: The heavy metal distribution and pollution of two rivers affected by acid mine drainage (AMD) in Lujiang County were reported in this study. The results showed that the average concentrations of Zn, Cu, Pb and Cd in these two rivers exceeded the baseline of sediments in the Yangtze River. For the speciation of heavy metals, residual species was the main form of Ni, Zn and Pb, which was stable with less harmful to the environment; Oxidizable species was the main form of Cu, and the reducible and residual species of Mn and Cd. Correlation analyses indicated that the weak acid-extraction of Cu in river sediments was affected by grain size greatly. The Igeo of heavy metals in Shicao river was Cu > Cd > Zn > Pb > Mn > Ni, with a mean of 2.05 for Cu and 1.19 for Cd, respectively, corresponding to moderate and partial moderate pollution level. The Igeo of Huangtun river was Cu > Cd > Pb > Zn > Ni > Mn, with an average of 2.25 for Cu, corresponding to moderate pollution level. The potential ecological risk of heavy metals in these two rivers was Cd > Cu > Pb > Ni > Zn > Mn. The Eri of Cd and Cu in Shicao river were 162.81 and 57.03, respectively, indicated very strong and medium ecological risk, respectively; The Eri of Cd and Cu in Huangtun river were 80.62 and 46.97, indicated strong and medium ecological risk, respectively. It indicated that Cd and Cu were the main risk factors. Both of Shicao and Huangtun rivers affected by AMD at Lujiang County showed a low level of heavy metal pollution in contrast to those at Tongling City.
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Key words:
- Lujiang mining area /
- acid mine drainage /
- heavy metal /
- geoaccumulation index /
- ecological risk
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[1] 邹晓锦, 仇荣亮, 周小勇, 等. 大宝山矿区重金属污染对人体健康风险的研究[J]. 环境科学学报,2008,28(7):1406-1412. ZOU X J, QU R L, ZHOU X Y, et al. Heavy metal contamination and health risk assessment in Dabao Mountain, China[J]. Acta Scientiae Circumstantiae, 2008, 28(7):1406-1412(in Chinese).
[2] 王小芳, 李方晓, 黄涛, 等. 安徽铜陵铜尾矿硫形态及硫同位素分布特征[J]. 中国环境科学,2019,39(4):1664-1671. WANG X F, LI F X, HUANG T, et al. Distribution characteristics of sulfur species and isotopes in a copper tailing at Tongling, Anhui Province[J]. China Environmental Science. 2019, 39(4):1664-1671(in Chinese).
[3] CAEIRO S, COSTA M H, RAMOS T B, et al. Assessing heavy metal contamination in Sado Estuary sediment:An index analysis approach[J]. Ecological Indicators, 2005, 5(2):151-169. [4] 李如忠, 姜艳敏, 潘成荣, 等. 典型有色金属矿山城市小河流沉积物重金属形态分布及风险评估[J]. 环境科学,2013,34(3):1067-1075. LI R Z, JIANG Y M, PAN C R, et al. Fraction distribution and risk assessment of heavy metals in stream sediments from a typical nonferrous metals mining city[J]. Environmental Science, 2013, 34(3):1067-1075(in Chinese).
[5] YOUNG S M, ISHIGA H, ROSER B P, et al. Geochemistry of sediments in three sectors of Trincomalee Bay, Sri Lanka:Provenance, modifying factors and present environmental status[J]. Journal of Soils and Sediments, 2014, 14(1):204-217. [6] NAICKER K, CUKROWSKA E, MCCARTHY T S. Acid mine drainage arising from gold mining activity in Johannesburg, South Africa and environs[J]. Environmental Pollution, 2003, 122(1):29-40. [7] 弓晓峰, 陈春丽, 周文斌, 等. 鄱阳湖底泥中重金属污染现状评价[J]. 环境科学,2006,27(4):126-130. GONG X F, CHEN C L, ZHOU W B, et al. Assessment on heavy metal pollution in the sediment of Poyang Lake[J]. Environmental Science, 2006, 27(4):126-130(in Chinese).
[8] [9] 魏焕鹏, 党志, 易筱筠, 等. 大宝山矿区水体和沉积物中重金属的污染评价[J]. 环境工程学报,2011,5(9):1943-1949. WEI H P, DANG Z, YI X J, et al. Evaluation on pollution of heavy metals in water and sediments in Dabaoshan mine[J]. Chinese Journal of Environmental Engineering, 2011, 5(9):1943-1949(in Chinese).
[10] 叶宏萌, 袁旭音, 赵静. 铜陵矿区河流沉积物重金属的迁移及环境效应[J]. 中国环境科学,2012,32(10):1853-1859. YE H M, YUAN X Y, ZHAO J. Spatial migration and environmental effects of heavy metals in river sediments from in the Tongling mining area, Anhui Province[J]. China Environmental Science, 2012, 32(10):1853-1859(in Chinese).
[11] 周涛发, 张鑫, 袁峰, 等. 安徽铜陵有色金属矿区环境界面中的重金属迁移模式与生态修复[J]. 矿物学报,2007,27(z1):403-405. ZHOU T F, ZHANG X, YUAN F, et al. Heavy metal migration mode and ecological restoration in the environmental interface of Tongling nonferrous metal mining area, Anhui Province[J]. Acta Mineralogica Sinica, 2007, 27(z1):403-405(in Chinese).
[12] TESSIER A, CAMPBELL P G C, BISSON M. Sequential extraction procedure for the speciation of particulate trace metals[J]. Analytical Chemistry, 1979, 51(7):844-851. [13] SUNGUR A, SOYLAK M, YILMAZ E, et al. Characterization of heavy metal fractions in agricultural soils by sequential extraction procedure:the relationship between soil properties and heavy metal fractions[J]. Soil and Sediment Contamination:An International Journal, 2015, 24(1):1-15. [14] DELGADO J, BARBA-BRISO C, NIETO J M, et al. Speciation and ecological risk of toxic elements in estuarine sediments affected by multiple anthropogenic contributions (Guadiana saltmarshes, SW Iberian Peninsula):I. Surficial sediments[J]. Science of the Total Environment, 2011, 409(19):3666-3679. [15] FAN W, WANG W X, CHEN J, et al. Cu, Ni and Pb speciation in surface sediments from a contaminated bay of northern China[J]. Marine Pollution Bulletin, 2002, 8(44):820-826. [16] 俞慎, 历红波. 沉积物再悬浮-重金属释放机制研究进展[J]. 生态环境学报,2010,19(7):1724-1731. YU S, LI H B. Perspectives on the release of heavy metals via sediment resuspension[J]. Ecology and Environmental Sciences, 2010, 19(7):1724-1731(in Chinese).
[17] 陈春霄, 姜霞, 战玉柱, 等. 太湖表层沉积物中重金属形态分布及其潜在生态风险分析[J]. 中国环境科学,2011,31(11):1842-1848. CHEN C X, JIANG X, ZHAN Y Z, et al. Speciation distribution and potential ecological risk assessment of heavy metals in sediments of Taihu lake[J]. China Environmental Science, 2011, 31(11):1842-1848(in Chinese).
[18] 张鑫, 周涛发, 袁峰, 等. 铜陵矿区水系沉积物中重金属污染及潜在生态危害评价[J]. 环境化学,2005,24(1):106-107. ZHANG X, ZHOU T F, YUAN F, et al. Evaluation of heavy metal pollution and potential ecological hazards in water sediments in Tongling Mining Area[J]. Environmental Chemistry, 2005, 24(1):106-107(in Chinese).
[19] 林炳营. 环境地球化学简明原理[M]. 北京:冶金工业出版社,1990. LIN B Y. Concise principles of environmental geochemistry[M]. Beijing:Metallurgical Industry Press, 1990(in Chinese). [20] 吴旭升. 安徽省庐江县钟山铁矿床地质特征及找矿方向[J]. 华东地质,2016,37(3):214-220. WU X S. Geological feature and exploration direction of the Zhongshan iron ore deposit in Lujiang County, Anhui Province[J]. East China Geology, 2016, 37(3):214-220(in Chinese).
[21] RAURET G, LOPEZ-SANCHEZ J F, SAHUQUILLO A, et al. Improvement of the BCR three step sequential extraction procedure prior to the certification of new sediment and soil reference materials[J]. Journal of Environmental Monitoring, 1999, 1(1):57-61. [22] MÜLLER G. Index of geoaccumulation in sediments of the Rhine river[J]. Geojournal, 1969, 2(3):108-118. [23] HAKANSON L. An ecological risk index for aquatic pollution control. A sedimentological approach[J]. Water Research, 1980, 14(8):975-1001. [24] 陈翠华, 倪师军, 何彬彬, 等. 江西德兴矿集区水系沉积物重金属污染的时空对比[J]. 地球学报,2008,29(5):639-646. CHEN C H, NI J S, HE B B, et al. Spatial-temporal variation of heavy metals contamination in sediments of the Dexing mine, Jiangxi Province[J]. Acta Geoscientica Sinica, 2008, 29(5):639-646(in Chinese).
[25] 张朝生, 章申. 长江水系沉积物重金属含量空间分布特征研究:地统计学方法[J]. 地理学报,1997,64(2):184-192. ZHANG C S, ZHANG S. Spatial distribution characteristics of heavy metals in the sediments of Changjiang river system——geostatistics method[J]. Acta Geographica Sinica, 1997, 64(2):184-192(in Chinese).
[26] 郭晶, 李利强, 黄代中, 等. 洞庭湖表层水和底泥中重金属污染状况及其变化趋势[J]. 环境科学研究,2016,29(1):44-51. GUO J, LI L Q, HUANG D Z, et al. Assessment of heavy metal pollution in surface water and sediment of Dongting Lake[J]. Research of Environmental Sciences, 2016, 29(1):44-51(in Chinese).
[27] 田林锋, 胡继伟, 秦樊鑫, 等. 基于统计的百花湖表层水中重金属分布特征[J]. 环境科学研究,2011,24(3):259-267. TIAN L F, HU J W, QIN F X, et al. Statistical analysis of distribution characteristics of heavy metals in surface water from Baihua lake[J]. Research of Environmental Sciences, 2011, 24(3):259-267(in Chinese).
[28] 尚英男, 倪师军, 张成江, 等. 成都市河流表层沉积物重金属污染及潜在生态风险评价[J]. 生态环境,2005(6):827-829. SHANG Y N, NI J S, ZHANG C J, et al. Pollution of heavy metals in the surface sediments from rivers in Chengdu and their potential ecological risk[J]. Ecology and Environment, 2005 (6):827-829(in Chinese).
[29] 沈吉, 薛滨, 吴敬禄, 等. 湖泊沉积与环境演化[M]. 北京:科学出版社,2010. SHEN J, XUE B, WU J L, et al. Lake sedimentation and environmental evolution[M]. Beijing:Science Press, 2010(in Chinese). [30] 黄飞, 王泽煌, 蔡昆争, 等. 大宝山尾矿库区水体重金属污染特征及生态风险评价[J]. 环境科学研究,2016,29(11):1701-1708. HUANG F, WANG Z H, CAI K Z, et al. Pollution characteristics and potential ecological risks of heavy metals in water of tailing zone in Dabaoshan mine, Guangdong Province, China[J]. Research of Environmental Sciences, 2016, 29(11):1701-1708(in Chinese).
[31] 周怀东, 袁浩, 王雨春, 等. 长江水系沉积物中重金属的赋存形态[J]. 环境化学,2008,27(4):515-519. ZHOU H D, YUAN H, WANG Y C, et al. The chemical speciation of heavy metals in sediments from Yangtze basin[J]. Environmental Chemistry, 2008, 27(4):515-519(in Chinese).
[32] 唐永成, 吴言昌, 储国正, 等. 安徽沿江地区铜金多金属矿床地质[M]. 武汉:地质出版社,1998. TANG Y C, WU Y C, CHU G Z, et al. Geology of copper-gold polymetallic deposits along the Yangtze River in Anhui Province[M]. Wuhan:Geology Press, 1998(in Chinese). [33] [34] [35] 吴大敏. 新桥硫铁矿矿床疏干引起地面塌陷及其综合治理[J]. 化工矿产地质,2006,28(1):40-43. WU D M. The complex harnessing of surface sinking of dredging the water of Xinqiao pyrite mine[J]. Geology of Chemical Minerals, 2006, 28(1):40-43(in Chinese).
[36] 孙缨泽. 铜陵新桥河重金属污染及来源解析研究[D]. 合肥:合肥工业大学,2013. SUN Y Z. Pollution assessment and source apportionment of heavy metals in Xinqiao River[D]. Hefei:Hefei University of Technology, 2013(in Chinese). [37] 王银泉. 铜陵市新桥矿区土壤重金属污染评价及源解析研究[D]. 合肥:合肥工业大学,2014. WANG Y Q. Pollution assessment and source apportionment of heavy metals in soils around Xinqiao mining area in Tongling, Anhui Province[D]. Hefei:Hefei University of Technology, 2014(in Chinese). [38] 陈明, 胡兰文, 陶美霞, 等. 桃江河沉积物中重金属污染特征及风险评价[J]. 环境科学学报,2019,39(5):1599-1606. CHEN M, HU L W, TAO M X, et al. Heavy metal pollution characteristics and risk assessment in sediments of Taojiang River[J]. Acta Scientiae Circumstantiae, 2019, 39(5):1599-1606(in Chinese).
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