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1.
Air pollution in Athens basin and health risk assessment   总被引:9,自引:0,他引:9  
An inventory of air pollution sources within the Athens basin is carried out for the years 1989, 1992 and 1998 and the results areinputted in a climatological model for predicting ambient concentrations. Despite of the significant growth in the numberof road vehicles and the deteriorating traffic, the emissions andambient concentrations of fine particulates, CO, NOx and VOCappear to remain reasonably constant over for the period 1989 to 1998, while these of SO2 and Pb are reduced, mainly due to the renewal of vehicle fleet, the use of catalytic technologies and the improved quality of the used fuel. The results further indicate that for CO, NOx and VOC the major source is road traffic, while for PM2.5 and SO2 both space heating andtraffic share responsibility. The air pollutant concentrations monitored by the network of 11 stations are reviewed and statistics related to air quality guidelines are presented. As fine particulate levels are not monitored, approximate PM2.5and PM10 concentrations are derived from black smoke ones on basis of experimentally determined conversion factors. The computed and monitored air pollution levels are compared and found in reasonable agreement. The results of the above analysisshow that the levels of all `classical' pollutants, with the exception of SO2 and Pb, exceed significantly the WHO guidelines and are thus expected to exert a significant healthimpact. The latter could be quantified in relation to the PM2.5 or PM10 levels on the basis of risk assessment information developed by the World Health Organization (WHO). The results show that the existing levels of fine particle concentrations in Athens increase significantly the mortality and morbidity, and reduce the average longevity of the entirepopulation from 1.3 to 1.7 years.  相似文献
2.
我国环境统计存在的主要问题及对策   总被引:3,自引:2,他引:1  
从落实科学发展观角度,密切结合环保部的中心工作——污染减排,从管理和技术层面剖析了目前环境统计工作面临的诸多问题,并针对性地提出了解决问题的对策,以供环境管理参考使用。  相似文献
3.
双怠速法测定LPG汽车尾气中污染物的排放水平   总被引:1,自引:1,他引:0       下载免费PDF全文
依据双怠速法跟踪监测了广州市LPG改装车辆的排气状况,分析了LPG改装车辆排气状况未达到预期效果的原因,提出需加强汽车专用液化气供给系统的建设与管理,确保车用液化气的质量达到规定要求;进一步筛选应用技术可靠、质量稳定的LPG装置,并制定有关规定;加强对油改气车辆的日常检查与维护保养。  相似文献
4.
污染源自动监测数据有效性影响因素分析   总被引:1,自引:0,他引:1  
结合我国污染源自动监测现状,分别从技术、产品、建设、管理与环境等各不同角度,分析了各因素对监测数据有效性的影响,并提出了一些相应的建议与对策。  相似文献
5.
The Keelung port, which is located on the northern tip of Taiwan, right next to the Taipei metropolitan area, is an important international harbor. However, any air pollutants generated from the Keelung port region, immediately travel to the neighboring Keelung city, and greatly impact the residents' daily life and the quality of their environment. This study has investigated and quantified pollution emissions, from the Keelung port region, between 1997 and 2002. Emissions from major air pollution sources were estimated. The estimated results indicated that total TSP (total suspended particles) emissions had significantly increased, from 5221 ton/yr in 1997 to 262 687 ton/yr in 2002, due to the greatly increased volume of sand imported into Keelung Harbor. Quantities of other emissions, such as SO2, NO2, CO and HC remained stable and were 440, 207, 78 and 25 ton/yr, respectively, on average, with variations within 7% over the previous six-year period. By examining the emissions from pollution sources, it was found that TSP emissions mainly originated from re-suspension of dust, due to both vehicle movement and the sand unloading process; this accounted for over 99% of the total TSP emissions produced in the port region. About 80% of the total SO2 emissions originated from the main ships' engines within the Keelung port region, due to the use of fuel with a high sulfur content. In addition, loading/unloading machines within the port region were the major sources of NO2, CO and HC pollution emissions, which comprised 54, 58 and 66% of the total emissions of these pollutants, respectively. TSP emissions from Keelung port were much higher than from the neighboring Keelung city; hence, alleviating TSP emissions should be the first priority for air pollution reduction within both the port of Keelung and Keelung city.  相似文献
6.
介绍了有机热载体炉的分类和工作原理,并对有机热载体炉与蒸气锅炉的基本特性及其烟尘测试的主要特点进行了比较,提出有机热载体炉大气污染物的适用排放标准应按照GB13271-2001《锅炉大气污染物排放标准》执行。  相似文献
7.
对执行大气污染物排放标准时碰到的一些问题进行分析和讨论,并提出我们的看法和建议。  相似文献
8.
An air quality sampling program was designed and implemented to collect the baseline concentrations of respirable suspended particulates (RSP = PM10), non-respirable suspended particulates (NRSP) and fine suspended particulates (FSP = PM2.5). Over a three-week period, a 24-h average concentrations were calculated from the samples collected at an industrial site in Southern Delhi and compared to datasets collected in Satna by Envirotech Limited, Okhla, Delhi in order to establish the characteristic difference in emission patterns. PM2.5, PM10, and total suspended particulates (TSP) concentrations at Satna were 20.5 ± 6.0, 102.1 ± 41.1, and 387.6 ± 222.4 μg m−3 and at Delhi were 126.7 ± 28.6, 268.6 ± 39.1, and 687.7 ± 117.4 μg m−3. Values at Delhi were well above the standard limit for 24-h PM2.5 United States National Ambient Air Quality Standards (USNAAQS; 65 μg m−3), while values at Satna were under the standard limit. Results were compared with various worldwide studies. These comparisons suggest an immediate need for the promulgation of new PM2.5 standards. The position of PM10 in Delhi is drastic and needs an immediate attention. PM10 levels at Delhi were also well above the standard limit for 24-h PM10 National Ambient Air Quality Standards (NAAQS; 150 μg m−3), while levels at Satna remained under the standard limit. PM2.5/PM10 values were also calculated to determine PM2.5 contribution. At Satna, PM2.5 contribution to PM10 was only 20% compared to 47% in Delhi. TSP values at Delhi were well above, while TSP values at Satna were under, the standard limit for 24-h TSP NAAQS (500 μg m−3). At Satna, the PM10 contribution to TSP was only 26% compared to 39% in Delhi. The correlation between PM10, PM2.5, and TSP were also calculated in order to gain an insight to their sources. Both in Satna and in Delhi, none of the sources was dominant a varied pattern of emissions was obtained, showing the presence of heterogeneous emission density and that nonrespirable suspended particulate (NRSP) formed the greatest part of the particulate load.  相似文献
9.
从总量控制与排污权交易的概念出发,介绍园区的基本情况以及目前园区环境管理方法和缺点,结合国内总量控制与排污权交易试点省市经验,着重论述总量控制与排污权交易在园区环境管理中的作用,并阐述在园区中推行总量控制与排污权交易的几点意见.  相似文献
10.
对不同类型的炉灶煤耗及污染物的排放量进行了定量计算,在大量的统计资料及监测数据的基础上,分析阿图什市各类型炉灶燃煤及污染物排放的情况,并通过定量计算进行了探讨,提出相关的对策和建议.  相似文献
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