排序方式: 共有30条查询结果,搜索用时 140 毫秒
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总量控制规划中允许排放量的平权分配 总被引:4,自引:0,他引:4
对总量控制规划中公平合理分配各污染源允许排放量的意义以及现有平权分配方法中存在的问题进行分析。阐明了允许排放量平权分配的原则,提出了平权分配污染源允许排放量的B值法。剖析了分析平权后剩余环境容量的必要性,并提出了相应的解决方法。 相似文献
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推行清洁生产实现化学工业持续发展 总被引:2,自引:0,他引:2
Environmental Protection Specialization Commission under Chemical Industry Engineering Society of China 《化工环保》1995,15(3):162-166
介绍了国际社会推行清洁生产的发展过程。从我国化学工业污染现状和污染原因两个方面论述了我国化学工业推行清洁生产的必要性,指出推行清洁生产是实现我国化学工业持续发展的必由之路,并提出我国化学工业推行清洁生产的具体对策和建议。 相似文献
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湖北省武汉市青山区发改委 《再生资源与循环经济》2010,3(9)
<正>(接上期)2青山区循环经济发展分析2.1循环经济主要指标情况近几年,青山区通过创新区域发展战略,以"实现经济增长与资源节约、环境保护"的三赢为目标,全力 相似文献
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This paper deals with the determination of trace elements in normal human hair, liver and kidney by Proton Induced X-ray Emission (PIXE) analysis. Sampling, specimen preparation and experimental procedures are described in detail. The accuracy of our system has been checked up with the determination of standard reference materials. The preliminary results on correlations between trace elements in human tissues are discussed. Application of the method described in the paper gives evidence in favour of the PIXE as a good tool on environmental life elements and health studies. 相似文献
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农业生态系统中同位素示踪技术及发展趋势 总被引:3,自引:0,他引:3
在土壤侵蚀研究中,^137Cs、^210Pb和^7Be示踪技术已得到广泛应用,^210Pb主要用在沉积速率的测定及沉积年代的示踪研究上,^137Cs特别适用于大面积的水土流失普查和土壤侵蚀普查,^7Be用于短期内土壤侵蚀研究。在土壤肥效和植物营养元素研究中,常用^13C、^32P和^15N及其化合物示踪定量评价土壤养分,追踪植物对养分的吸收、运转、分配和代谢过程。在环境污染方面,用重金属如Pb、Hg、Cd、Zn等元素的同位素判别污染物质来源,研究污染历史和污染元素在土-水-气-植物中的迁移转化以及在动物有机体内的迁移累积。文章综述了同位素示踪技术在上述方面的应用现状和发展趋势。 相似文献
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Betti M Aldave de las Heras L Janssens A Henrich E Hunter G Gerchikov M Dutton M van Weers AW Nielsen S Simmonds J Bexon A Sazykina T;European Commission MARINA II study 《Journal of environmental radioactivity》2004,74(1-3):243-254
From the collated data relevant to discharges by the nuclear industry, it results that the input of beta activity (excluding Chernobyl fallout and tritium) into the OSPAR region decreased by a factor of 4 from 1986 to 1991, reaching by this date the same level as in the early 1950s. Over the same period the discharges of the alpha activity into the OSPAR region also decreased by a factor 3, the same trend has been seen also for tritium. Since 1986 the effective dose to members of the critical group in the vicinity of Sellafield and Cap de La Hague was consistently below the ICRP and EU limit of 1 mSv per year to members of the general public. The overall radiological impact from nuclear industry on the population of the European Union from the OSPAR area has decreased from 280 manSv y(-1) in 1978 to 14 manSv y(-1) in 2000. 相似文献