全文获取类型
收费全文 | 93篇 |
免费 | 0篇 |
国内免费 | 7篇 |
专业分类
安全科学 | 1篇 |
废物处理 | 4篇 |
环保管理 | 3篇 |
综合类 | 16篇 |
基础理论 | 14篇 |
污染及防治 | 43篇 |
评价与监测 | 12篇 |
社会与环境 | 7篇 |
出版年
2023年 | 3篇 |
2022年 | 9篇 |
2021年 | 8篇 |
2020年 | 3篇 |
2019年 | 2篇 |
2018年 | 2篇 |
2017年 | 6篇 |
2016年 | 4篇 |
2015年 | 8篇 |
2014年 | 3篇 |
2013年 | 9篇 |
2012年 | 6篇 |
2011年 | 10篇 |
2010年 | 3篇 |
2009年 | 1篇 |
2008年 | 6篇 |
2007年 | 4篇 |
2006年 | 3篇 |
2005年 | 4篇 |
2002年 | 2篇 |
1998年 | 1篇 |
1984年 | 1篇 |
1980年 | 2篇 |
排序方式: 共有100条查询结果,搜索用时 437 毫秒
41.
Tarek M. Galal Fatma A. Gharib Safia M. Ghazi Khalid H. Mansour 《Environmental science and pollution research international》2017,24(27):21636-21648
Wetland plants are biological filters that play an important role in maintaining aquatic ecosystem and can take up toxic metals from sediments and water. The present study investigated the seasonal variation in the accumulation potential of heavy metals by Cyperus articulatus in contaminated watercourses. Forty quadrats, distributed equally in 8 sites (six contaminated sites along Ismailia canal and two uncontaminated sites along the River Nile), were selected seasonally for sediment, water, and plant investigations. Autumn was the flourishing season of C. articulatus with the highest shoot density, length, and diameter as well as aboveground biomass, while summer showed the least growth performance. The photosynthetic pigments were markedly reduced under contamination stress. C. articulatus plants accumulated concentrations of most heavy metals, except Pb, in their roots higher than the shoots. The plant tissues accumulated the highest concentrations of Fe, Cd, Ni, and Zn during autumn, while Cu and Mn during spring, and Cr and Co during winter. It was found that Cd, Cu, Ni, Zn, Pb, and Co had seasonal bioaccumulation factor (BF) > 1 with the highest BF for Cd, Ni, and Zn during autumn, Co, Cu, and Pb in winter, spring, and summer, respectively. The translocation factor of most heavy metals, except Pb in spring, was <1 indicating potential phytostabilization of these metals. In conclusion, autumn is an ideal season for harvesting C. articulatus in order to monitor pollution in contaminated wetlands. 相似文献
42.
Polycyclic aromatic hydrocarbons (PAHs) and polychlorinated biphenyls (PCBs) distributions in the Bay of Marmara sea: Izmit Bay 总被引:1,自引:0,他引:1
Telli-Karakoç F Tolun L Henkelmann B Klinn C Okay O Schramm KW 《Environmental pollution (Barking, Essex : 1987)》2002,119(3):383-397
In 1999, the concentrations of 16 polycyclic aromatic hydrocarbons (PAHs), the total PAH and polychlorinated biphenyls (PCBs) were measured in sea water, sediment and mussels collected along the coast of Izmit Bay, the most important bay of the Marmara Sea. The total-PAH concentrations, measured by Spectrofluorometry were in the range of 1.16-13.68 microg/l in sea water, in the range of 30.0 1670.0 microg/g dry weight in sediments and in the range from 5.67 to 14.81 microg/g wet weight in edible part of mussel. HPLC revealed Phenanthrene (three rings), chrysene (four rings) and benz[a]antracene (five rings) to be the dominant PAHs in sea water, while 16 different PAHs compounds were observed and measured in mussel samples. The most pollution occured at Dogu Kanali and Dil Deresi where were the main rivers containing wastes fall into the the Izmit Bay. Although the maximum mono-ortho PCB concentrations in sea water were measured in the Dil Deresi River (26.33 ng/l) and the Solventa? (22.19 ng/l) stations, maximum PCB concentrations in mussels were measured in the SEKA (28.11 microg/kg) and the Dil Deresi River (25.68 microg/kg). The dominant congeners of PCBs were from tetra to hexachlorobiphenyls. The toxicity equivalent values were very low in sea water and mussels. 相似文献
43.
44.
Fatma M. El-Demerdash 《Journal of environmental science and health. Part. B》2013,48(4):262-268
A mixture of pyrethroids plus organophosphates was assessed for their potential effects on lipid peroxidation, the antioxidant defense system and lactate dehydrogenase (LDH) in rat kidney in vitro. Various insecticide concentrations were incubated with kidney homogenate at 37°C for different incubation times. Treatment with fenitothion (FNT) plus lambda-cyhalothrin (LC) caused a significant induction (P < 0.05) in thiobarbituric acid reactive substances (TBARS), which might be associated to decreased levels of reduced glutathione (GSH), superoxide dismutase (SOD), catalase (CAT), glutathione S-transferase (GST) activities and protein content in rat kidney. However, a significant induction of lactate dehydrogenase (LDH) activity was observed. The effect was concentration and time dependent. It can be concluded that depletion of GSH might indicate that reactive oxygen species (ROS) could be involved in the toxic effects of FNT plus LC which lead to marked perturbations in antioxidant defense system. 相似文献
45.
Nesrine Gdoura Abdelwaheb Abdelmouleh Jean-Claude Murat Khansa Chaabouni Fatma Makni-Ayedi Abdelfattah Elfeki 《Environmental Chemistry Letters》2011,9(4):485-490
In recent years, a number of studies have clearly pointed out the nutritional benefits of fish consumption. However, some concerns about potential health risks derived from contaminants found in fish have also been raised. Therefore, balancing adequately the risks and benefits of fish consumption is currently a health key issue. As tuna fish represents a large part of the traditional food in some countries, the possible impact of tuna fish consumption on public health was investigated. Hepatic damages following consumption of tuna fish white (ordinary) or red (dark) muscle were evaluated in rat. Under our experimental conditions, feeding the animals for 60?days with white or, more markedly, red tuna meat resulted in 1) an elevated uric acid level in blood, 2) an accumulation of lead in liver, 3) an atrophy of liver, 4) an increase in plasma aspartate aminotransferase and alanine aminotransferase activities, and 5) an oxidative stress in liver including an increased level of lipids peroxidation and enhanced activities of superoxide dismutase, catalase and glutathione peroxidase. In addition, liver histology revealed several abnormalities. These alterations could be attributed to both lead accumulation and high purine levels in tuna meat. We conclude that attention should be paid to a possible health impact of frequent and important consumption of tuna fish meat, especially the dark one. 相似文献
46.
Khitous Mohamed Saber Meryem Tirichine Nassima Aiouaz Fatma 《Journal of Material Cycles and Waste Management》2022,24(5):1786-1796
Journal of Material Cycles and Waste Management - In this investigation, mesophilic co-digestion of both slaughterhouse waste (SHW) with household waste (HSW) was carried out using a 50 L... 相似文献
47.
To evaluate the effects of cigarette smoking and biomass (dried dung) smoke on the oxidant–antioxidant status, three groups each with 5 rabbits were used. Groups of rabbits were exposed to either cigarette smoke, dried dung smoke or dry air, 1?h daily for one month. Protein carbonyls, prostaglandin F2α and malondialdehyde levels were significantly increased and protein sulfhydryls levels were significantly decreased in the cigarette smoke group compared with the control group. Only protein sulfhydryls levels were significantly decreased in dung group compared with the control group. Short course exposure to both cigarette smoke and biomass smoke decreased plasma antioxidant levels but only cigarette smoke increased plasma oxidant levels, whereas biomass smoke did not produce any change. 相似文献
48.
Three Egyptian industrial wastewater management programmes 总被引:1,自引:0,他引:1
Fatma A. El-Gohary Rifaat A. Wahaab Fayza A. Nasr Hamdy I. Ali 《The Environmentalist》2002,22(1):59-65
A pre-treatment programme for wastewater from factories, representing three main industrial sectors in Egypt, has been developed. The first case study was a factory producing potato-chips. Wastewater discharged from this factory was characterized by high values of BOD, SS and oil and grease (6000 mgO2 l–1, 6577 mg l–1 and 119 mg l–1 respectively). Chemical treatment using lime and lime aided by polyelectrolyte achieved good results. Residual values of BOD and SS after treatment were 97 mg l–1 and 49 mg l–1, respectively. Oil and grease concentrations were reduced by 91 percent. Treatment via activated sludge at a detention time of 4 hrs produced good quality effluent. The second case study was an automobile company, representing the metal finishing industry. Analyses of wastewater samples from the degreasing, phosphating and painting departments, as well as the end-of-pipe effluent were conducted. The end-of-pipe effluent contained high concentrations of oil and grease (366 mg l–1), phosphorous (111 mg l–1) and zinc (81 mg l–1). Chemical treatment of end-of-pipe wastewater using ferric chloride aided by lime, produced high quality effluent. The third sector was the chemical industry. For this purpose a paint factory was selected. Characteristics of raw wastewater varied widely according to the production rate. Average values of COD and BOD were 1950 mg l–1 and 683 mg l–1. Oil and grease ranged from 63 to 1624 mg l–1. Chemical treatment using ferric chloride in combination with lime at the optimum operating conditions achieved good results. Residual values after treatment of COD, BOD and oil and grease reached 120, 36 and 8.6 mg l–1, respectively. An engineering design for each case study has been prepared. 相似文献
49.
Boughariou Emna Allouche Nabila Ben Brahim Fatma Nasri Ghada Bouri Salem 《Environment, Development and Sustainability》2021,23(10):14749-14774
Environment, Development and Sustainability - Groundwater in semiarid regions is of extreme importance due to limited water resources and increasing population demand. Hence, a better knowledge of... 相似文献
50.
Mohammed Asmaa N. Radi Abeer M. Khaled Rehab Abo El-Ela Fatma I. Kotp Amna A. 《Environmental science and pollution research international》2020,27(34):42791-42805
Environmental Science and Pollution Research - New approaches are required for prevention and control of biofilm-producing bacteria and consequently mitigating the health problems of bovine... 相似文献