| 粤北大宝山矿尾矿铅污染迁移及生态系统环境响应 |
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| 引用本文： | 付善明,周永章,张澄博,丁健,窦磊,赵宇鴳.粤北大宝山矿尾矿铅污染迁移及生态系统环境响应[J].现代地质,2007,21(3):570-577. |
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| 作者姓名： | 付善明 周永章 张澄博 丁健 窦磊 赵宇鴳 |
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| 作者单位： | 1. 广州大学,环境科学与工程学院,广东,广州,510006;中山大学,地球环境与地球资源研究中心,广东,广州,510275
2. 中山大学,地球环境与地球资源研究中心,广东,广州,510275 |
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| 基金项目： | 广东省自然科学基金;广东省科技厅科技计划;教育部支持中山大学985工程GIS与遥感的地学应用创新平台和产业与区域发展研究创新基地基金 |
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| 摘 要： | 粤北大宝山铁多金属矿床的开发给环境带来了严重的危害。采选冶产生的废液及固体废弃物堆积的淋滤酸水,携带浸滤出的大量重金属离子随着酸水排入下游河道,严重影响矿区及酸水流域的生态环境。将矿床—土壤(含河流底泥)—水体—生命体视为统一的生态环境系统,从尾砂、水体、河流底泥、土壤以及食用蔬菜等方面探讨整个环境系统对重金属Pb的环境响应。结果表明:河流水中高Pb含量直接源于尾砂,并受水体pH值的显著影响;河流底泥能够大量聚集水体中的Pb,在高pH值时,相对稳定存在,在水体pH值降低时,Pb会被再次从河流底泥中释放出来,形成河流二次污染;土壤中Pb含量受土壤pH值和土壤粒度的影响;食用蔬菜中Pb的高含量受土壤Pb高含量决定,并受土壤pH值的影响,通过改善农业灌溉水质,提高土壤pH值,可以降低蔬菜重金属Pb含量。
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| 关 键 词： | Pb 酸性废水 重金属污染 环境地球化学 大宝山矿 广东 |
| 文章编号： | 1000-8527（2007）03-0570-08 |
| 收稿时间： | 2006-10-26 |
| 修稿时间： | 2007-06-05 |
Transfer and Ecosystem Effects of Lead Contamination in Dabaoshan Mine Tailings, Northern Guangdong |
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| FU Shan-ming,ZHOU Yong-zhang,ZHANG Cheng-bo,DING Jian,DOU Lei,ZHAO Yu-yuan.Transfer and Ecosystem Effects of Lead Contamination in Dabaoshan Mine Tailings, Northern Guangdong[J].Geoscience——Journal of Graduate School,China University of Geosciences,2007,21(3):570-577. |
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| Authors: | FU Shan-ming ZHOU Yong-zhang ZHANG Cheng-bo DING Jian DOU Lei ZHAO Yu-yuan |
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| Institution: | 1. School of Environmental Science and Engineering, Guangzhou University, Guangzhou, Guangdong 510006, China ; 2. Center for Earth Environment and Resources, Sun Yat-sen University, Guangzhou, Guangdong 510275, China |
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| Abstract: | Mining activities have caused severe soil environment changes in Dabaoshan Mine,Guangdong,Southern China.The acid mine drainage and heavy metal ions drained directly into the Hengshihe river,which contaminated severely the ecological environment along the river.The tailings,soils,sludges,water and plants are regarded as whole ecosystem,the environmental responses of whole ecosystem to acid mine drainage and heavy metal ions are investigated.The lead in river water came from the tailings,and the lead concentration isaffected distinctly by the pH value of water.River sludges can accumulate stably lead of water in high pH value water,but it should be released from the deposits when the pH value of water is low,forming the secondary contamination.The lead concentration in soils is affected by pH value and granularity of soils.The high lead concentration in plants is related with the total lead in soils,and is affected by the pH value of soils,thus increasing soils' pH value can reduce lead concentration in plants by improving irrigation water quality. |
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| Keywords: | Pb |
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