全文获取类型
收费全文 | 459篇 |
免费 | 21篇 |
国内免费 | 57篇 |
专业分类
安全科学 | 30篇 |
废物处理 | 2篇 |
环保管理 | 34篇 |
综合类 | 190篇 |
基础理论 | 34篇 |
污染及防治 | 118篇 |
评价与监测 | 103篇 |
社会与环境 | 23篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 21篇 |
2022年 | 11篇 |
2021年 | 8篇 |
2020年 | 15篇 |
2019年 | 8篇 |
2018年 | 14篇 |
2017年 | 8篇 |
2016年 | 9篇 |
2015年 | 8篇 |
2014年 | 25篇 |
2013年 | 15篇 |
2012年 | 19篇 |
2011年 | 43篇 |
2010年 | 31篇 |
2009年 | 35篇 |
2008年 | 35篇 |
2007年 | 26篇 |
2006年 | 14篇 |
2005年 | 9篇 |
2004年 | 15篇 |
2003年 | 10篇 |
2002年 | 14篇 |
2001年 | 12篇 |
2000年 | 12篇 |
1999年 | 18篇 |
1998年 | 18篇 |
1997年 | 18篇 |
1996年 | 5篇 |
1995年 | 21篇 |
1994年 | 15篇 |
1993年 | 5篇 |
1992年 | 12篇 |
1991年 | 4篇 |
1990年 | 1篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1981年 | 1篇 |
排序方式: 共有537条查询结果,搜索用时 15 毫秒
461.
利用ADMS-城市模型模拟分析鞍山市大气环境质量 总被引:2,自引:0,他引:2
利用鞍山市 2 0 0 2年的TSP(总悬浮颗粒物 )和SO2 (二氧化硫 )大气环境监测资料、污染源排放清单资料和气象资料 ,以及ADMS -城市大气扩散模型进行了鞍山市大气环境质量分析。结果表明 :鞍山市低架源对地面浓度的贡献较大 ,高架源对地面浓度的贡献相对较小。 相似文献
462.
463.
464.
为了加快大气降尘样品的蒸发速度和报出数据的及时,经过分析总结,得出蒸发样品的步骤为:先电热套蒸发再水浴蒸发最后用电热板蒸发,这样既可以节省时间,又可以节约能耗,避免样品在空气中放置时间过长,空气中的尘粒进入样品中,影响样品测定的结果。 相似文献
465.
Minero C Maurino V Pelizzetti E Vione D 《Environmental science and pollution research international》2007,14(4):241-243
Based on available literature data of [NO2
−], steady-state [·OH], and ·OH generation rate upon nitrate photolysis in environmental aqueous samples under sunlight, the
steady-state [·NO2], could be calculated. Interestingly, one to two orders of magnitude more ·NO2 would be formed in photochemical processes in atmospheric water droplets compared to transfer from the gas phase. The relative
importance of nitrite oxidation compared to nitrate photolysis as an ·NO2 source would be higher in atmospheric than in surface waters. The calculated levels of ·NO2 could lead to substantial transformation of phenol into nitrophenols in both atmospheric and surface waters. 相似文献
466.
Perrino C Canepari S Cardarelli E Catrambone M Sargolini T 《Environmental monitoring and assessment》2007,128(1-3):133-151
A field study was carried out at six locations in the Lazio region (Central Italy) aimed at characterising atmospheric particulate
matter (PM10 and PM2.5) from the point of view of the chemical composition and grain size distribution of the particles, the mixing properties of
the atmosphere, the frequency and relevance of natural events. The combination of four different analytical techniques (ion
chromatography, X-ray fluorescence and ICP for inorganic components, thermo-optical analysis for carbon compounds) yielded
sound results in terms of characterisation of the air masses. During the first three months of the study (October-December
2004), many pollution events of natural (sea-salt or desert dust episodes) or anthropogenic nature were identified and characterised.
More than 90% of the collected mass was identified by chemical analysis. The central role played by the mixing properties
of the lower atmosphere when pollution events occurred was highlighted. The results show a major impact of primary anthropogenic
pollutants on traffic stations and a homogeneous distribution of secondary pollutants over the regional area. An evaluation
of the sources of PM and an identification of possible reliable tracers were obtained using a chemical fractionation procedure. 相似文献
467.
It is known that fugitive dust can cause human health and environmental problems, alone or in combination with other air pollutants.
These problems are referred to as ‘external costs’ that have been traditionally ignored. However, there is a growing interest towards quantifying externalities to assist policy
and decision-making. With this in mind, the present study aimed at discussing the environmental regulations that deal with
fugitive dust, the impact of fugitive dust on human health and global climate system, and the available methods for calculating
fugitive dust externalities. The damage cost associated with human health and global environmental problems was predicted
based on the environmental strategy priority model. The damage cost estimated by the model ranged from 40 to 374 EUR/kg of
emitted fugitive dust with a mean value of 120 EUR/kg of emitted fugitive dust. It was also found that PM2.5 and PM10 have contributed to about 60% and 36% of the estimated damage cost, respectively. The remaining 4% was attributed to both
nitrate and sulfate aerosols. 相似文献
468.
大气污染预报技术及有关防治对策的研究 总被引:3,自引:1,他引:2
依据历史监测数据,研究了大气污染预测预报的方法及污染防治对策。利用主分量分析、多元逐步回归、拟合与逼近等方法,进行了天气预报参数与主要污染物的关系研究,建立了大气污染预测预报模型,制定了大气污染警戒值及警戒措施。模型可做48小时内大气污染预报及10日内大气污染趋势分析。 相似文献
469.
Hurricane as one of the most destructive natural hazards can make a devastating impact on the industrial equipment, especially atmospheric storage tanks, leading to the release of stored chemicals and disastrous safety and environmental issues. These catastrophic consequences are caused not only by strong winds but also by the torrential rainfall and inundating floods. The objective of this study is to present a risk-based methodology for assessing and reducing the vulnerability of atmospheric storage tanks to hurricanes. Considering the shell buckling, flotation, sliding, and roof sinking as dominant failure modes of atmospheric storage tanks during hurricanes, Bayesian network (BN) has been employed to combine the failure modes while considering their conditional dependencies. The probability updating feature of the developed BN was employed to indicate that the flood is the most critical hazard during hurricanes while the impact of wind and rainfall cannot be neglected. Extending the developed BN to an influence diagram, the cost-benefit filling of storage tanks with water prior to the advent of hurricanes was shown as a viable measure for reducing the damage probability. The results show that the proposed methodology can be used as an effective decision support tool for assessing and reducing the vulnerability of atmospheric storage tanks to natural hazards. 相似文献
470.
Jianguo Liu Haitao Zheng Youwen Sun Tao Luo Xueling Cheng Shiyong Shao Shouyin Zheng Bangyi Tao Bin Chen Qianguang Tu Kan Huang Bingbing Wang Mian Wang Xiaoquan Song Tianshu Zhang Yin Cheng 《环境科学学报(英文版)》2023,123(1):156-168
Accurate and comprehensive knowledge of the atmospheric environment and its evolution within the coastal ocean boundary layer are necessary for understanding the sources, chemical mechanisms, and transport processes of air pollution in land, sea, and atmosphere. We present an overview of coastal ocean boundary layer detection technology and equipment in China and summarize the progress and main achievements in recent years. China has developed a series of coastal ocean boundary layer detection t... 相似文献