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利用中国癌死亡率与土壤环境中化学元素的相关性研究成果 ,研究了贵州省癌死亡率与土壤环境中 As、 Cd、 Co、 Cu、 Hg、 Mn、 Ni、 Pb、 Se、 V、 L i、 Na、K、Rb、Cs、Mg、Ca、Sr、Ba、B、Al、Ga、In、Tl、Sc、Y、L a、Ce、Pr、Nd、Tb、 Dy、 Ho、 Er、 Tm、 Yb、 L u、 Th、 U、 Sn、 Ti、 Zr、 Hf、 Sb、 Bi、 Ta、 Te、 Mo、W、 Br、 I、 Fe等 5 2个化学元素含量的关系 相似文献
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基于THQ的锌冶炼厂周围人群食用蔬菜的健康风险分析 总被引:23,自引:2,他引:23
采用对应采样方法研究葫芦岛锌冶炼厂周围地区土壤、蔬菜中Pb、Cd、Hg、Zn、Cu的含量,采用目标危险系数(THQ)的方法对锌厂周围人群食用蔬菜的健康风险进行了评价.结果表明,锌厂周围蔬菜已经受到了重金属的严重污染,仅通过消耗蔬菜,锌厂周围成人居民Pb、Cd、Hg、Zn、Cu的平均摄入量分别为574.3、301.4、1.322、5263、292.5 μg·d-1;儿童Pb、Cd、Hg、Zn、Cu的平均摄入量为446.8、234.5、1.029、4095、227.6 μg·d-1.目标危险系数(THQ)评价表明,葫芦岛锌厂周围人群摄入Pb、Cd的目标危险系数大于1,存在Pb、Cd的健康风险;锌厂周围成人和儿童食用蔬菜而摄入重金属的TTHQ分别为5.79~9.90、7.6~13.0,蔬菜中重金属的复合污染已经使锌厂周围的居民面临潜在的健康风险. 相似文献
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关于森林的重要性,怎么说也不会言过其实--森林既能提供食物、药材、燃料、原料,又能防风固沙、保持水土、促进退化土地的复兴.还有美化环境、改善小气候、吸尘、消音、除污、防疫等诸多作用. 相似文献
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以昆山为例,实验室信息管理系统(LIMS)应用于环境监测实验室,是针对环境监测的流程化设计,应用移动互联网技术、物联网技术、大数据等技术,将环境监测实验室的人员、环境、流程、质量控制、仪器设备、标物标液、化学试剂、标准方法、分析报告、数据查询分析、图书资料、文件记录、移动监测、电子签章、数据采集等要素有机结合起来,形成一个科学、全面、开放、规范的综合管理体系,大幅提升环境管理业务水平和工作效率。 相似文献
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中华宝钢环境奖是中华环境保护基金会设立的我国环境保护领域代表性强、覆盖面广、影响力大的环保奖项.其组织委员会由中宣部、全国人大环资委、全国政协人资环委、教育部、文化部、民政部、国家环保总局、国家广电总局、全国总工会、共青团中央、全国妇联、中华环保基金会、东方卫视及宝山钢铁股份有限公司等14家单位的有关领导组成.其评选委员会由环境保护及其相关方面的专家、学者、管理人员和社会知名人士组成. 相似文献
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The characteristics of vertical and horizontal variations of lead element (Pb) in soil-plant system of vertical zone in Changbai Mountain National Nature Reserve(CNNR)were studied.The results showed that Pb concentrations in soils of vertical zone are all above 25mg/kg,and the average Pb concentration of each soil zone negatively correlates its degree of variation,i.e.brown coniferous forest soil zone has the lowest average Pb concentration of four soil zones,and the highest horizontal variation;however,mountain soddy forest soil has the highest average Pb concentration,and the lowest horizontal variation;the average concentration of plant Pb of each plant zone is lower than the worldwide average level of Pb in plant(Clarke),respectively,and plant Pb content order is consistent with soil Pb content order,but their horizontal variations are different from those in soil zones,the variation of mountain tundra forest zone is highest,but Betula ermanii forest zoner the lowest.Vertical variation of plant Pb is obviously higher than that in soils with variation coefficient of 89.76%;the enrichment capability of plant for Pb is depended on the plant types and the different organs of plant;parent material and parent rock,pH values,soil organic matter and soil particle fraction etc.are the main factors influencing variations of Pb contant in soil-plant system of vertical zone in CNNR. 相似文献
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额济纳盆地生态系统的地质学分析 总被引:4,自引:0,他引:4
本文从生态地质学的角度对额济纳盆地生态系统进行了分析,阐明了额济纳盆地各个生态子系统的地境条件与相应植物群落结构之间的耦合关系。并指出了各生态子系统的稳定性:①河湖岸带生态子系统地境条件最好,但大多数植物的生存域范围狭窄,群落结构并不十分稳定。②湿地生态子系统、荒漠戈壁生态子系统和沙漠生态子系统地境条件较差,但是生长在这些子系统中的大都是一些生存域宽,能够适应恶劣环境的植物,因此群落结构相对较稳定。最后根据各个子系统的特点提出了相应的治理对策。 相似文献
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对污水处理厂污泥脱水车间各设备操作易出现的问题做了分析总结;提出应合理选用药剂及精心操作,从而减少污泥处理费用达到节能降耗的目的;为污水处理厂技术人员及污泥脱水操作人员提供参考。 相似文献
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Azo dyes are among the oldest man-made chemicals and they are still widely used in the textile, printing and the food industries.About 10% - 15% of the total dyes used in the industry is released into the environment during the manufacturing and usage. Some dyes and some of their N-substituted aromatic bio-transformation products are toxic and/or carcinogenic and therefore these dyes are considered to beenvironmental pollutants and health hazards. These azo dyes are degraded by physico-chemical and biological methods. Of these, biological methods are considered to be the most economical and efficient. In this work, attempts were made to degrade these dyes aerobically. Theorganisms which were efficient in degrading the following azo dyes-Red RB, Remazol Red, Remazol Blue, Remazol Violet, Remazol Yellow,Golden Yellow, Remazol Orange, Remazol Black- were isolated from three different sources viz., wastewater treatment plant, paper milleffluent treatment plant and tannery was tewater treatment plant. The efficiency of azo dye degradation by mixed cultures from each source wasanalyzed. It was found that mixed cultures from tannery treatment plant worked efficiently in decolorizing Remazol Red, Remazol Orange,Remazol Blue and Remazol Violet, while mixed cultures from the paper mill effluent worked efficiently in decolorizing Red RB, Golden Yellow and Remazol Yellow. The mixed cultures from wastewater treatment plant efficiently decolorized Remazol Black. 相似文献
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福建武夷山自然保护区野生经济植物资源 总被引:4,自引:1,他引:4
笔者在多年调查研究的基础上,统计了武夷山自然保护区维管束植物有 194科、851 属、2025种、80亚种(或变种),并分析了各属的区系成分。在此基础上,根据野生经济植物的用途,把区内野生经济植物分为 8类:即油脂植物、淀粉及糖类植物、芳香油植物、纤维植物、鞣料植物、观赏植物、药用植物、蜜粉源植物,论述了各类野生经济植物的主要种类,为进一步研究武夷山自然保护区野生经济植物,以及植物资源的合理利用与保护提供基础资料和有关的科学依据。 相似文献
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This paper presents a mathematical programming approach to analyze the feasibility of zero liquid discharge option in different industries. Mathematical programming methodologies are applied to four industrial cases—a tricresyl phosphate plant, an ethyl chloride plant, a paper mill and a refinery. In each case study various end of pipe and regeneration configurations using different treatment technologies are explored to determine the possibility of zero liquid discharge and its economical feasibility. The results show that the relationship between the cost of regeneration and the cost of freshwater as well as the discharge concentration of the treatment is the determining factor for the feasibility of zero liquid discharge. 相似文献