全文获取类型
收费全文 | 567篇 |
免费 | 7篇 |
国内免费 | 12篇 |
专业分类
安全科学 | 10篇 |
废物处理 | 56篇 |
环保管理 | 52篇 |
综合类 | 74篇 |
基础理论 | 116篇 |
污染及防治 | 200篇 |
评价与监测 | 56篇 |
社会与环境 | 21篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 12篇 |
2022年 | 24篇 |
2021年 | 26篇 |
2020年 | 13篇 |
2019年 | 10篇 |
2018年 | 19篇 |
2017年 | 23篇 |
2016年 | 39篇 |
2015年 | 18篇 |
2014年 | 42篇 |
2013年 | 49篇 |
2012年 | 36篇 |
2011年 | 49篇 |
2010年 | 25篇 |
2009年 | 23篇 |
2008年 | 24篇 |
2007年 | 36篇 |
2006年 | 19篇 |
2005年 | 12篇 |
2004年 | 20篇 |
2003年 | 9篇 |
2002年 | 8篇 |
2001年 | 6篇 |
2000年 | 2篇 |
1999年 | 3篇 |
1997年 | 3篇 |
1996年 | 2篇 |
1995年 | 7篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1990年 | 5篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1986年 | 3篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1981年 | 2篇 |
1979年 | 2篇 |
1975年 | 1篇 |
1973年 | 1篇 |
1970年 | 1篇 |
排序方式: 共有586条查询结果,搜索用时 203 毫秒
511.
Delaney P Healy RM Hanrahan JP Gibson LT Wenger JC Morris MA Holmes JD 《Journal of environmental monitoring : JEM》2010,12(12):2244-2251
Porous silica spheres were investigated for their effectiveness in removing typical indoor air pollutants, such as aromatic and carbonyl-containing volatile organic compounds (VOCs), and compared to the commercially available polymer styrene-divinylbenzene (XAD-4). The silica spheres and the XAD-4 resin were coated on denuder sampling devices and their adsorption efficiencies for VOCs evaluated using an indoor air simulation chamber. Real indoor sampling was also undertaken to evaluate the affinity of the silica adsorbents for a variety of indoor VOCs. The silica sphere adsorbents were found to have a high affinity for polar carbonyls and found to be more efficient than the XAD-4 resin at adsorbing carbonyls in an indoor environment. 相似文献
512.
Andrés Maximiliano Attademo Paola Mariela Peltzer Rafael Carlos Lajmanovich Mariana Cristina Cabagna-Zenklusen Celina María Junges Agustín Basso 《Environmental monitoring and assessment》2014,186(1):635-649
Different biological variables of tadpoles, including survival, development and growth rates, and biomarkers [cholinesterases, glutathione-S-transferases (GST), and blood cell morphology] were evaluated in two anuran species, Scinax squalirostris (Hylidae) and Leptodactylus mystacinus (Leptodactylidae), using in situ experimental chambers in a rice field (RF) sprayed with insecticide Lambda-cyhalothrin (LTC) by aircraft in Santa Fe Province, Argentina. We found a significant decrease in body weight (0.62?±?0.04 g) of L. mystacinus and an increased development rate of S. squalirostris in individuals from RF (41?±?1; Gosner) with respect to individuals from the reference site (RS: 0.93?±?0.04 g and 37?±?0; respectively). In S. squalirostris, individuals from RF mean values of butyrylcholinesterase activities decreased at 48 (4.09?±?0.32 nmol min-1 mg-1 of TP) and 96 h (3.74?±?0.20 nmol min-1 mg-1 of TP), whereas inhibition of acetylcholinesterase was observed at 96 h (47.44?±?2.78 nmol min-1 mg-1 of TP). In L. mystacinus from RF, an induction of acetylcholinesterase activity was observed at 96 h (36.01?±?1.09 nmol min-1 mg-1 of TP). Glutathione-S-transferase levels varied between species, being higher in L. mystacinus individuals but lower in S. squalirostris from RF at 48 (272.29 ±11.78 and 71.87?±?1.70 nmol min-1 mg-1 of TP; respectively) and 96 h (279.25?±?13.06 and 57.62?±?4.58 nmol min-1 mg-1 of TP, respectively). Blood cell parameters revealed a lower number of mitotic cells (MC: 0.36?±?0.31%o for S. squalirostris and 0.08?±?0.05 %o for L. mystacinus) and higher number of eosinophils (E: 3.45?±?1.75 %o for S. squalirostris and 7.64?±?0.98 %o for L. mystacinus) in individuals from the RF than in individuals from the RS (MC: 2.55?±?0.74 %o for S. squalirostris and 1.87?±?0.72%o for L. mystacinus; and E: 0.13?±?0.09 for S. squalirostris and 3.20?±?0.80 for L. mystacinus). Overall, our results demonstrate the existence of apparent differences in sensitivity between species in a series of sublethal responses to short-term exposure in RF after the application of Lambda-cyhalothrin. We suggest that the integral use of biological endpoints (development and growth) together with biomarkers (cholinesterase, GST, and blood cell parameters) may be a promising integral procedure for investigating pesticide exposure in wild frog populations. 相似文献
513.
Iain McLellan Andrew Hursthouse Calum Morrison Adélia Varela Cristina Silva Pereira 《Environmental monitoring and assessment》2014,186(2):1281-1293
A major concern for the cork and wine industry is ‘cork taint’ which is associated with chloroanisoles, the microbial degradation metabolites of chlorophenols. The use of chlorophenolic compounds as pesticides within cork forests was prohibited in 1993 in the European Union (EU) following the introduction of industry guidance. However, cork produced outside the EU is still thought to be affected and simple, robust methods for chlorophenol analysis are required for wider environmental assessment by industry and local environmental regulators. Soil samples were collected from three common-use forests in Tunisia and from one privately owned forest in Sardinia, providing examples of varied management practice and degree of human intervention. These provided challenge samples for the optimisation of a HPLC-UV detection method. It produced recoveries consistently >75 % against a soil CRM (ERM-CC008) for pentachlorophenol. The optimised method, with ultraviolet (diode array) detection is able to separate and quantify 16 different chlorophenols at field concentrations greater than the limits of detection ranging from 6.5 to 191.3 μg/kg (dry weight). Application to a range of field samples demonstrated the absence of widespread contamination in forest soils at sites sampled in Sardinia and Tunisia. 相似文献
514.
Gillenwater PS Urgun-Demirtas M Negri MC Alvarado J 《Journal of environmental monitoring : JEM》2012,14(1):27-29
In order to compare treatability test results evaluating low-level mercury (Hg) removal from oil refinery wastewater, improvements in Hg analytical methods were conducted at two US EPA certified analytical labs. The revisions in the analytical protocols improved Hg recoveries and hence enabled more reliable data interpretation and comparison for the specific wastewater tested. Nevertheless, significant differences between results from the two laboratories were identified in a split-sample experiment. 相似文献
515.
516.
517.
Cristina P. B. Melo Maria V. E. Grossmann Fábio Yamashita Elza Y. Youssef Luiz Henrique Dall’Antônia Suzana Mali 《Journal of Polymers and the Environment》2011,19(3):739-749
The objective of this work was to manufacture biodegradable films by two different processes (casting and extrusion), from
different combinations of cassava starch and xanthan gum. These films were produced by casting and by extrusion from six different
starch-xanthan gum combinations (0, 2, 4, 6, 8 and 10% w/w), containing glycerol as plasticizer (20% w/w) and were also characterized
according to their microstructure, optical, mechanical, and barrier properties. Scanning electron microscopy of the starch-xanthan
gum extruded films showed reticulated surface and smooth interior, suggesting that xanthan was driven to the surface and gelatinized
starch to the interior of the films during extrusion. Films manufactured by casting were entirely homogeneous. In general,
casted films presented lower opacity and water vapor permeability and higher stress at break than films manufactured by extrusion.
Xanthan gum addition affected mechanical properties of starch films, improving their stress and strain at break, especially
for extruded samples, but these properties did not show stability at different RH conditions. 相似文献
518.
Gibson J Droppo IG Farnood R Mahendran B Seto P Liss SN 《Water environment research》2012,84(5):387-395
Hydrodynamic forces generated by an orifice plate under low pressure were examined as a means of disrupting flocs, in order to improve disinfection of treated wastewater effluents. Changes in cavitation conditions were found to have little impact on the extent of particle breakage in this experimental setup. The rate of strain (flow rate divided by the hole radius cubed), however, was found to be the best predictor of floc breakage. Floc breakage was not affected by changes in floc concentration, but was very sensitive to differences between flocs collected from different sources. Larger flocs (90 to 106 microm) were broken apart to a greater extent than smaller ones (53 to 63 microm). Hydrodynamic treatment decreased the viability of bacteria associated with large flocs, and also increased the ultraviolet dose response by up to one log unit (i.e., a factor of ten). Subjecting final effluent wastewaters to hydrodynamic treatment, therefore, provides a treatment strategy for conditions in which the presence of flocs limits the level of disinfection that can be achieved. 相似文献
519.
Spatial distribution of illicit drugs in surface waters of the natural park of Pego-Oliva Marsh (Valencia,Spain) 总被引:1,自引:1,他引:0
Vazquez-Roig P Andreu V Blasco C Morillas F Picó Y 《Environmental science and pollution research international》2012,19(4):971-982
Background, aim and scope
The Pego-Oliva Marsh is the second most important wetland in the Valencian Community (Spain). It is included in the RAMSAR agreement and represents one key point for migratory birds. Emerging contaminants from the human pressure, such as pharmaceuticals, illicit drugs and personal care product, are not included in the list of priority contaminants of the Water Framework Directive yet, and are neither monitored nor controlled. However, pollution of emerging contaminants can threaten the environment and even human health. In order to understand the status of the emerging contamination and recommend future rationalization of countermeasures, the occurrence of illicit drugs was investigated. 相似文献520.
Pico Y Blasco C Farré M Barceló D 《Environmental science and pollution research international》2012,19(4):946-957