全文获取类型
收费全文 | 242篇 |
免费 | 1篇 |
国内免费 | 11篇 |
专业分类
安全科学 | 8篇 |
废物处理 | 24篇 |
环保管理 | 9篇 |
综合类 | 20篇 |
基础理论 | 41篇 |
污染及防治 | 95篇 |
评价与监测 | 33篇 |
社会与环境 | 21篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 7篇 |
2022年 | 23篇 |
2021年 | 16篇 |
2020年 | 12篇 |
2019年 | 6篇 |
2018年 | 9篇 |
2017年 | 15篇 |
2016年 | 11篇 |
2015年 | 11篇 |
2014年 | 9篇 |
2013年 | 42篇 |
2012年 | 11篇 |
2011年 | 21篇 |
2010年 | 9篇 |
2009年 | 7篇 |
2008年 | 11篇 |
2007年 | 5篇 |
2006年 | 4篇 |
2005年 | 1篇 |
2004年 | 6篇 |
2003年 | 2篇 |
2002年 | 3篇 |
2001年 | 5篇 |
2000年 | 1篇 |
1995年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1988年 | 1篇 |
1987年 | 1篇 |
1974年 | 1篇 |
排序方式: 共有254条查询结果,搜索用时 31 毫秒
181.
Ramdan Hanney Binti Shams Shahriar Imteaz Monzur Alam Ahsan Amimul Honda Takashi 《Journal of Material Cycles and Waste Management》2023,25(2):873-885
Journal of Material Cycles and Waste Management - Waste management is vital for global sustainable development. Sustainable development goals of a country would not be achieved if the waste... 相似文献
182.
Muhammad Aqeel Ashraf Ayesha Masood Khan Mushtaq Ahmad Shatirah Akib Khaled S. Balkhair Nor Kartini Abu Bakar 《Environmental geochemistry and health》2014,36(6):1165-1190
Radionuclide contamination in terrestrial ecosystems has reached a dangerous level. The major artificial radionuclide present in the environment is 137Cs, which is released as a result of weapon production related to atomic projects, accidental explosions of nuclear power plants and other sources, such as reactors, evaporation ponds, liquid storage tanks, and burial grounds. The release of potentially hazardous radionuclides (radiocesium) in recent years has provided the opportunity to conduct multidisciplinary studies on their fate and transport. Radiocesium’s high fission yield and ease of detection made it a prime candidate for early radio-ecological investigations. The facility setting provides a diverse background for the improved understanding of various factors that contribute toward the fate and transfer of radionuclides in the terrestrial ecosystem. In this review, we summarize the significant environmental radiocesium transfer factors to determine the damaging effects of radiocesium on terrestrial ecosystem. It has been found that 137Cs can trace the transport of other radionuclides that have a high affinity for binding to soil particles (silts and clays). Possible remedial methods are also discussed for contaminated terrestrial systems. This review will serve as a guideline for future studies of the fate and transport of 137Cs in terrestrial environments in the wake of the Fukushima Nuclear Power Plant disaster in 2011. 相似文献
183.
Ebaid Hossam Abd Rabou Abdel-Mageed Ahmed Al-Tamimi Jameel Homoud Hassan Iftekhar Rady Ahmed Mostafa El-Newehy Mohamed Hassan Mashaly Ashraf Mohamed Abdel-Megeed Ahmed AbdelFattah Mahmoud Alhazza Ibrahim Abdel-Halim Essam Sayed Salem Abdelfattah Zeidan Mohamed 《Environmental science and pollution research international》2020,27(32):40009-40019
Environmental Science and Pollution Research - Oil spills can result in significant damage to marine estuaries, rivers, lakes, wetlands, and shorelines. Electrospun nanofibers containing... 相似文献
184.
Thomas A. Weppelmann Meer T. Alam Jocelyn Widmer David Morrissey Mohammed H. Rashid Valery M. Beau De Rochars J. Glenn Morris Jr. Afsar Ali Judith A. Johnson 《Environmental monitoring and assessment》2014,186(12):8509-8516
In 2010, a magnitude 7.0 earthquake struck Haiti, severely damaging the drinking and wastewater infrastructure and leaving millions homeless. Compounding this problem, the introduction of Vibrio cholerae resulted in a massive cholera outbreak that infected over 700,000 people and threatened the safety of Haiti’s drinking water. To mitigate this public health crisis, non-government organizations installed thousands of wells to provide communities with safe drinking water. However, despite increased access, Haiti currently lacks the monitoring capacity to assure the microbial safety of any of its water resources. For these reasons, this study was designed to assess the feasibility of using a simple, low-cost method to detect indicators of fecal contamination of drinking water that could be implemented at the community level. Water samples from 358 sources of drinking water in the Léogâne flood basin were screened with a commercially available hydrogen sulfide test and a standard membrane method for the enumeration of thermotolerant coliforms. When compared with the gold standard method, the hydrogen sulfide test had a sensitivity of 65 % and a specificity of 93 %. While the sensitivity of the assay increased at higher fecal coliform concentrations, it never exceeded 88 %, even with fecal coliform concentrations greater than 100 colony-forming units per 100 ml. While its simplicity makes the hydrogen sulfide test attractive for assessing water quality in low-resource settings, the low sensitivity raises concerns about its use as the sole indicator of the presence or absence of fecal coliforms in individual or community water sources. 相似文献
185.
This paper illustrates the result of land use/cover change in Dhaka Metropolitan of Bangladesh using topographic maps and multi-temporal remotely sensed data from 1960 to 2005. The Maximum likelihood supervised classification technique was used to extract information from satellite data, and post-classification change detection method was employed to detect and monitor land use/cover change. Derived land use/cover maps were further validated by using high resolution images such as SPOT, IRS, IKONOS and field data. The overall accuracy of land cover change maps, generated from Landsat and IRS-1D data, ranged from 85% to 90%. The analysis indicated that the urban expansion of Dhaka Metropolitan resulted in the considerable reduction of wetlands, cultivated land, vegetation and water bodies. The maps showed that between 1960 and 2005 built-up areas increased approximately 15,924 ha, while agricultural land decreased 7,614 ha, vegetation decreased 2,336 ha, wetland/lowland decreased 6,385 ha, and water bodies decreased about 864 ha. The amount of urban land increased from 11% (in 1960) to 344% in 2005. Similarly, the growth of landfill/bare soils category was about 256% in the same period. Much of the city's rapid growth in population has been accommodated in informal settlements with little attempt being made to limit the risk of environmental impairments. The study quantified the patterns of land use/cover change for the last 45 years for Dhaka Metropolitan that forms valuable resources for urban planners and decision makers to devise sustainable land use and environmental planning. 相似文献
186.
This paper presents the chemical speciation and retention behavior of chromium (Cr), nickel (Ni), and cadmium (Cd) prior to
and after the electrokinetic remediation in glacial till soil. The speciation of the metals was predicted using the chemical
speciation program MINEQL+. The simulations were performed for single-contaminant with only Cr(VI) or Ni, and multi-contaminants consisting of: (1)
Cr(VI), Ni, and Cd; (2) Cr(III), Ni and Cd; (3) Cr(VI), Cr(III), Ni and Cd; (4) Cr(VI), Ni, and Cd with reducing agents; and
(5) Cr(III), Ni, and Cd with oxidizing agent (Mn). The results showed that the speciation and distribution of cationic metals
[Ni, Cd, and Cr(III)] in glacial till soil remain unaffected or slightly affected during electrokinetics. This is attributed
to the high pH buffering capacity of the glacial till, leading the metals to precipitate in the soil prior to and after electrokinetics.
This study showed that during electrokinetics, Cr(VI) existed as anionic complex and migrated towards the anode and the migration
is maximum in case of a single-contaminant system. The study also showed that near the anode in the absence of any reducing
and oxidizing agent, Cr(VI) mostly adsorbed, and some of Cr(VI) reduced to Cr(III) and migrated towards the cathode and finally
precipitated due to high pH conditions. Ni and Cd remain adsorbed or precipitated due to the high pH conditions throughout
the soil. Among the reducing agents, the sulfide had significant effect on the migration of metals compared to ferrous ions.
While in the presence of oxidizing agent (Mn), no noticeable Cr(VI) was found in the soil sample indicating the reduction
of Cr(VI) to Cr(III) and the predominance of reducing conditions due to the presence of naturally occurring iron in the glacial
till soil. Overall, this study provides a reasonable explanation of the speciation and distribution of chromium, nickel and
cadmium during the electrokinetic remediation of glacial till soil. 相似文献
187.
Assessment of phenanthrene bioavailability in aged and unaged soils by mild extraction 总被引:2,自引:0,他引:2
Khan MI Cheema SA Shen C Zhang C Tang X Shi J Chen X Park J Chen Y 《Environmental monitoring and assessment》2012,184(1):549-559
It has become apparent that the threat of an organic pollutant in soil is directly related to its bioavailable fraction and
that the use of total contaminant concentrations as a measure of potential contaminant exposure to plants or soil organisms
is inappropriate. In light of this, non-exhaustive extraction techniques are being investigated to assess their appropriateness
in determining bioavailability. To find a suitable and rapid extraction method to predict phenanthrene bioavailability, multiple
extraction techniques (i.e., mild hydroxypropyl-β-cyclodextrin (HPCD) and organic solvents extraction) were investigated in soil spiked to a range of phenanthrene levels (i.e.,
1.12, 8.52, 73, 136, and 335 μg g − 1 dry soil). The bioaccumulation of phenanthrene in earthworm (Eisenia fetida) was used as the reference system for bioavailability. Correlation results for phenanthrene suggested that mild HPCD extraction
was a better method to predict bioavailability of phenanthrene in soil compared with organic solvents extraction. Aged (i.e.,
150 days) and fresh (i.e., 0 day) soil samples were used to evaluate the extraction efficiency and the effect of soil contact
time on the availability of phenanthrene. The percentage of phenanthrene accumulated by earthworms and percent recoveries
by mild extractants changed significantly with aging time. Thus, aging significantly reduced the earthworm uptake and chemical
extractability of phenanthrene. In general, among organic extractants, methanol showed recoveries comparable to those of mild
HPCD for both aged and unaged soil matrices. Hence, this extractant can be suitable after HPCD to evaluate risk of contaminated
soils. 相似文献
188.
Geochemical fractionation of trace elements in sediments of Hugli River (Ganges) and Sundarban wetland (West Bengal, India) 总被引:1,自引:0,他引:1
Serena Massolo Antonello Bignasca Santosh Kumar Sarkar Mousumi Chatterjee Bhaskar Deb Bhattacharya Aftab Alam 《Environmental monitoring and assessment》2012,184(12):7561-7577
A sequential extraction procedure was carried out to determinate the concentrations of 11 elements (Al, As, Cd, Co, Cr, Cu, Fe, Mn, Ni, Pb, Zn) in different geochemical phases of sediments collected along the Hugli (Ganges) River Estuary and in the Sundarban mangrove wetland, eastern coastal part of India. The chemical speciation of elements was determined using the three-step sequential extraction procedure described by the European Community Bureau of Reference. Total metal concentration was determined using a microwave-assisted acid digestion procedure. Metal concentrations were near the background level except for As for which a moderate pollution can be hypothesized. The mobility order of the metals was: Cd?>?Mn?>?Cu?>?Zn?>?As?>?Co?>?Pb?>?Ni?>?Fe?>?Cr?>?Al. The highest percentage of Cd (>60%) was found in the most labile phase. Residual fraction was prevailing for Fe, Cr and Al, while Pb was mainly associated with the reducible fraction. Data were compared with Sediment Quality Guidelines to estimate the relationship between element concentrations and adverse biological effects on benthic community, finding the possibility of some toxic effects due to the presence of As in the entire studied area and Cd, only in Calcutta. 相似文献
189.
Md. Wasim Aktar Dwaipayan Sengupta Samsul Alam Ashim Chowdhury 《Environmental monitoring and assessment》2010,168(1-4):657-668
Methomyl, S-methyl (EZ)-N-(methylcarbamoyloxy)thioacetimidate, is a systemic insecticide chosen for the management of shoot and fruit borer, Leucinodes orbonalis G. Codex Alimentarious Commission has proposed a maximum residue limit (MRL) of 0.2 mg kg???1 of methomyl, and there is a need to validate this value on eggplant. First + first-order model can explain the nonlinear dissipation pattern of methomyl conveniently in comparison to first-order kinetics. The preharvest intervals (PHI) of 27.3 and 35.3 days as obtained from first + first-order model for single and double doses would bring down the methomyl residue below MRL in actual practice. The respective half-lives were 6.6 and 7.8 days. On the other hand, first-order model suggests methomyl dissipated with a half-life value around 5 days and proposed PHIs of 6.57 and 8.57 days for single and double doses, which was far from reality. Hence, five different decontamination agents were chosen for the decontamination of methomyl from eggplant. Safety factors such as theoretical maximum daily intake and maximum permissible intake were used to evaluate risk assessment to human health. A 3-day waiting period for the both doses, following conventional agricultural practice and processing factor could not ensure sufficient margin of safety. Subjecting the data to a processing factor of 60% could not bring the residues below the proposed MRL by Codex. Methomyl is not found appropriate and effective for application in eggplant. Either the proposed MRL needs to be revised or good agricultural practice involving methomyl for plant protection in eggplant cultivation is questioned. 相似文献
190.
Zulfiqar Ahmad Gulraiz Akhter Arshad Ashraf Alan Fryar 《Environmental monitoring and assessment》2010,170(1-4):395-406
A three-dimensional contaminant transport model has been developed to simulate and monitor the migration of disposal of hydrocarbon exploration produced water in Injection well at 2,100 m depth in the Upper Cretaceous Pab sandstone, Bhit area in Dadu district of Southern Pakistan. The regional stratigraphic and structural geological framework of the area, landform characteristics, meteorological parameters, and hydrogeological milieu have been used in the model to generate the initial simulation of steady-state flow condition in the underlying aquifer’s layers. The geometry of the shallow and deep-seated characteristics of the geological formations was obtained from the drilling data, electrical resistivity sounding surveys, and geophysical well-logging information. The modeling process comprised of steady-state simulation and transient simulation of the prolific groundwater system of contamination transport after 1, 10, 30 years of injection. The contaminant transport was evaluated from the bottom of the injection well, and its short- and long-term effects were determined on aquifer system lying in varying hydrogeological and geological conditions. 相似文献