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71.
Haque N Peralta-Videa JR Jones GL Gill TE Gardea-Torresdey JL 《Environmental pollution (Barking, Essex : 1987)》2008,153(2):362-368
The metal concentrations in a copper mine tailings and desert broom (Baccharis sarothroides Gray) plants were investigated. The metal concentrations in plants, soil cover, and tailings were determined using ICP-OES. The concentration of copper, lead, molybdenum, chromium, zinc, arsenic, nickel, and cobalt in tailings was 526.4, 207.4, 89.1, 84.5, 51.7, 49.6, 39.7, and 35.6mgkg(-1), respectively. The concentration of all elements in soil cover was 10-15% higher than that of the tailings, except for molybdenum. The concentration of copper, lead, molybdenum, chromium, zinc, arsenic, nickel, and cobalt in roots was 818.3, 151.9, 73.9, 57.1, 40.1, 44.6, 96.8, and 26.7mgkg(-1) and 1214.1, 107.3, 105.8, 105.5, 55.2, 36.9, 30.9, and 10.9mgkg(-1) for shoots, respectively. Considering the translocation factor, enrichment coefficient, and the accumulation factor, desert broom could be a potential hyperaccumulator of Cu, Pb, Cr, Zn, As, and Ni. 相似文献
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大山包湿地景观保护与开发的对策研究 总被引:3,自引:0,他引:3
针对大山包湿地的保护价值及其在黑颈鹤保护中的重要地位,提出了如何合理进行湿地景观的保护与开发,以确保湿地生态系统可持续性发展。 相似文献
76.
矿山地质灾害高分辨率遥感监测方法研究——以北京市房山区史家营煤矿为例 总被引:2,自引:0,他引:2
以北京市房山区史家营煤矿为研究对象建立了矿山地质灾害高分辨率遥感监测方法与技术流程。它是在建立矿山地质灾害遥感识别标志的基础上,对高分辨率数据进行空间分辨率融合和信息增强,利用"已知推未知"的工作思路,对多种地质灾害类型进行识别与提取;结果表明,高分辨率遥感图像和"3S"技术在矿山地质灾害监测中发挥着重要作用;对矿山地质灾害诱因的建模分析结果表明,人工采矿活动是导致矿山地质灾害发生的最直接原因,构造、岩性和坡度等是矿山地质灾害发生的重要因素。因此,加强矿山非法采矿的遥感监测与治理,注重对已采矿区的回填和管理是矿山地质灾害治理的关键。 相似文献
77.
Dabaoshan Mine, the largest mine in south China, has been developed since the 1970s. Acid mine drainage (AMD) discharged from the mine has caused severe environmental pollution and human health problems. In this article, chemical characteristics, mineralogy of ocher precipitations and heavy metal attenuation in the AMD are discussed based on physicochemical analysis, mineral analysis, sequential extraction experiments and hydrogeochemistry. The AMD chemical characteristics were determined from the initial water composition, water-rock interactions and dissolved sulfide minerals in the mine tailings. The waters, affected and unaffected by AMD, were Ca-SO4 and Ca-HCO3 types, respectively. The affected water had a low pH, high SO42- and high heavy metal content and oxidation as determined by the Fe2+/Fe3+ couple. Heavy metal and SO42- contents of Hengshi River water decreased, while pH increased, downstream. Schwertmannite was the major mineral at the waste dump, while goethite and quartz were dominant at the tailings dam and streambed. Schwertmannite was transformed into goethite at the tailings dam and streambed. The sulfate ions of the secondary minerals changed from bidentate- to monodentate-complexes downstream. Fe-Mn oxide phases of Zn, Cd and Pb in sediments increased downstream. However, organic matter complexes of Cu in sediments increased further away from the tailings. Fe3+ mineral precipitates and transformations controlled the AMD water chemistry. 相似文献
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我国煤炭资源赋存丰富且条件复杂,历年开采引发或加剧众多矿山地质环境问题。本文以煤炭资源开发各环节活动及开采形式为基础.分析和探讨了煤矿建设和生产对矿山地质环境的影响,探讨了问题类型及特征,并给出了不同开采形式对矿山地质环境影响的关系,并提出了矿山地质环境问题防治工作进一步开展的几点建议,对我国发展绿色、高效矿山有一定促进作用。 相似文献
80.
Poul Johansen Martin Munk Hansen Gert Asmund Palle Bo Nielsen 《Chemistry and Ecology》2013,29(1-2):35-55
In monitoring the impact of a lead-zinc mine in Greenland, species of fish, prawns, seaweed and mussels have been analysed for cadmium, copper, lead and zinc for several years. These metals have been released to the marine environment in significant amounts from the mining operation. 相似文献