全文获取类型
收费全文 | 151篇 |
免费 | 6篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 14篇 |
废物处理 | 21篇 |
环保管理 | 16篇 |
综合类 | 9篇 |
基础理论 | 25篇 |
环境理论 | 1篇 |
污染及防治 | 50篇 |
评价与监测 | 17篇 |
社会与环境 | 6篇 |
出版年
2023年 | 3篇 |
2022年 | 7篇 |
2021年 | 15篇 |
2020年 | 4篇 |
2019年 | 2篇 |
2018年 | 8篇 |
2017年 | 7篇 |
2016年 | 8篇 |
2015年 | 5篇 |
2014年 | 15篇 |
2013年 | 10篇 |
2012年 | 5篇 |
2011年 | 10篇 |
2010年 | 6篇 |
2009年 | 3篇 |
2008年 | 8篇 |
2007年 | 11篇 |
2006年 | 4篇 |
2005年 | 4篇 |
2004年 | 6篇 |
2003年 | 8篇 |
2002年 | 5篇 |
2001年 | 1篇 |
2000年 | 1篇 |
1993年 | 1篇 |
1991年 | 1篇 |
1985年 | 1篇 |
排序方式: 共有159条查询结果,搜索用时 15 毫秒
91.
Solanum nigrum grown in contaminated soil: effect of arbuscular mycorrhizal fungi on zinc accumulation and histolocalisation 总被引:1,自引:0,他引:1
Marques AP Oliveira RS Samardjieva KA Pissarra J Rangel AO Castro PM 《Environmental pollution (Barking, Essex : 1987)》2007,145(3):691-699
Zn tissue accumulation in Solanum nigrum grown in a non-contaminated and a naturally contaminated Zn matrix and the effect of inoculation with different arbuscular mycorrhizal fungi (AMF) on metal uptake were assessed. S. nigrum grown in the contaminated soil always presented higher Zn accumulation in the tissues, accumulating up to 1622 mg Zn kg(-1). The presence of both Glomus claroideum and Glomus intraradices enhanced the uptake and accumulation of Zn by S. nigrum (up to 83 and 49% higher Zn accumulation, respectively). The main deposits of the metal were found in the intercellular spaces and in the cell walls of the root tissues, as revealed by autometallography, with the inoculation with different AMF species causing no differences in the location of Zn accumulation. These findings indicate that S. nigrum inoculated with selected heavy metal tolerant AMF presents extracting and accumulating capacities, constituting a potentially suitable remediation method for Zn polluted soils. 相似文献
92.
Célia Alves Ana I. Calvo Liliana Marques Amaya Castro Teresa Nunes Esther Coz Roberto Fraile 《Environmental science and pollution research international》2014,21(21):12390-12402
An indoor/outdoor monitoring programme of PM10 was carried out in two sports venues (a fronton and a gymnasium). Levels always below 50 μg m?3 were obtained in the fronton and outdoor air. Due to the climbing chalk and the constant process of resuspension, concentrations above 150 μg m?3 were registered in the gymnasium. The chalk dust contributed to CO3 2? concentrations of 32?±?9.4 μg m?3 in this sports facility, which represented, on average, 18 % of the PM10 mass. Here, the carbonate levels were 128 times higher than those registered outdoors. Much lower concentrations, around 1 μg m?3, were measured in the fronton. The chalk dust is also responsible for the high Mg2+ concentrations in the gym (4.7?±?0.89 μg m?3), unfolding a PM10 mass fraction of 2.7 %. Total carbon accounted for almost 30 % of PM10 in both indoor spaces. Aerosol size distributions were bimodal and revealed a clear dependence on physical activities and characteristics of the sports facilities. The use of climbing chalk in the gymnasium contributed significantly to the coarse mode. The average geometric mean diameter, geometric standard deviation and total number of coarse particles were 0.77 μm, 2.79 cm?3 and 28 cm?3, respectively. 相似文献
93.
Mait Kriipsalu Marcia Marques Aleksander Maastik 《Journal of Material Cycles and Waste Management》2008,10(1):79-86
Partly due to the complex and variable composition of oily sludge generated by the petroleum industry, cost-effective treatment
and proper disposal pose considerable challenges worldwide. In this study, an extended component-based analysis of the oily
sludge from a flocculation-flotation unit of a wastewater treatment system in a refinery in Sweden was carried out over 1
year. The heterogeneity of the oily sludge is illustrated by the wide ranges of concentrations found for different chemical
components, particularly metals. Among the petroleum hydrocarbons, the most abundant compounds were nonpolar aliphatic hydrocarbons
(63.7 ± 16.7 g kg−1); from the benzene, toluene, ethylbenzene, and xylene group, xylenes (91–240 mg kg−1) were most abundant; and among polycyclic aromatic hydrocarbons, naphthalene (25.7 ± 21.4), fluorene (27.25 ± 10.0), and
phenanthrene (43.8 ± 18.4 mg kg−1) were most abundant (all results in terms of dry matter). Based on the EU guidelines and the mean concentration values for
metals found in the oily sludge, e.g., Pb (135.4 ± 125.8), Cu (105.2 ± 79.1), Hg (42.8 ± 31.3), Ni (320 ± 267.4), and Zn (1321.7
± 529.9 mg kg−1), disposal of oily sludge even in landfills for hazardous waste is not allowed. The organic content of the sludge can be
reduced through biotreatment, but not the metal content. A multistep component-based treatment scheme is therefore needed. 相似文献
94.
Enzymatic hydrolyzates of recycled paper sludge were tested as suitable feedstock for biological desulfurization by Gordonia alkanivorans strain 1B. Only the hydrolyzate obtained after enzymatic mixture dialysis (dialyzed hydrolyzate) allowed dibenzothiophene (DBT) desulfurization, in spite of faster bacterial growth did occur on non-dialyzed hydrolyzate. For dialyzed hydrolyzate, 250microM DBT was consumed after 96h displaying a maximum specific productivity of 2-hydroxybiphenyl of 1.1micromol g(-1)(dry cell weight) h(-1). A comparison of the kinetics of biodesulfurization was assessed according to the type of hydrolyzate supplementation. Complete consumption of DBT was observed upon the addition of only phosphates and ammonia although further addition of zinc did increase the 2-hydroxybiphenyl production by 14%. Strain 1B was able to desulfurize a model oil containing DBT, 4-methylDBT and 4,6-dimethylDBT, reducing by 63% the total sulfur content in 168h. 相似文献
95.
Modelling the effects of eutrophication, mitigation measures and an extreme flood event on estuarine benthic food webs 总被引:1,自引:0,他引:1
Alexandra Baeta Nathalie NiquilJoão C. Marques Joana Patrício 《Ecological modelling》2011,222(6):1209-1221
Human-mediated and natural disturbances such as nutrient enrichment, habitat modification, and flood events often result in significant shifts in species composition and abundance that translate into changes in the food web structure. Six mass-balanced models were developed using the “Ecopath with Ecosim” software package to assess changes in benthic food web properties in the Mondego estuarine ecosystem (Portugal). Field, laboratory and literature information were used to construct the models. The main study objective was to assess at 2 sites (a Zostera meadow and a bare sediment area) the effects of: (1) a period of anthropogenic enrichment, which led to excessive production of organic matter in the form of algal blooms (1993/1994); (2) the implementation of mitigation measures, following a long period of eutrophication (1999/2000); and (3) a centenary flood (winter 2000/2001). Different numbers of compartments were identified at each site and in each time period. In general, the Zostera site, due to its complex community, showed a higher number of compartments and a higher level of system activity (i.e. sum of consumptions, respiration, flow to detritus, production, total system throughput, net primary production and system omnivory index). The differences at the two sites in the three time periods in the breakdown of throughput were mainly due to differences in the biomass of the primary producers (higher primary production at the Zostera site). Consumption, respiration and flow to detritus were dominated by the grazers Hydrobia ulvae and Scrobicularia plana at the Zostera and bare sediment sites respectively. At both sites, after recovery measures were implemented there was an increase in S. plana and Hediste diversicolor biomass, consumption, respiration and flows to detritus, and a decrease in H. ulvae biomass and associated flows, which increased again after the flood event. The mass-balanced models showed that the trophic structure of the benthic communities in Mondego estuary was affected differently by each disturbance event. Interestingly, in our study a high system throughput seems to be associated with higher stress levels, which contradicts the idea that higher system activity is always a sign of healthier conditions. 相似文献
96.
Lobo Maria Tereza Morais Pereira Souza Scalize Paulo Sérgio Kraus Cleber Nunes da Silva Weliton José Garnier Jérémie da Motta Marques David Bonnet Marie-Paule de Souza Nogueira Ina 《Environmental science and pollution research international》2020,27(10):10642-10657
Environmental Science and Pollution Research - Canadian Water Quality Index (CWQI) provides protection for freshwater life promoting healthy ecosystems and safeguarding human health. Biological... 相似文献
97.
de Oliveira Laís Roberta Galdino dos Santos Filho Derovil Antonio Fraga Tiago José Marques Jucá José Fernando Thomé da Motta Sobrinho Maurício Alves 《Journal of Material Cycles and Waste Management》2021,23(4):1646-1656
Journal of Material Cycles and Waste Management - In this work, food wastes (FWs) and domestic sewage sludge (DSS) were used as raw materials for energy recovery by anaerobic digestion (AD). AD was... 相似文献
98.
The levels of zinc accumulated by roots, stems, and leaves of two plant species, Rubus ulmifolius and Phragmites australis, indigenous to the banks of a stream in a Portuguese contaminated site were investigated in field conditions. R. ulmifolius, a plant for which studies on phytoremediation potential are scarce, dominated on the right side of the stream, while P. australis proliferated on the other bank. Heterogeneous Zn concentrations were found along the banks of the stream. Zn accumulation in both species occurred mainly in the roots, with poor translocation to the aboveground sections. R. ulmifolius presented Zn levels in the roots ranging from 142 to 563 mg kg(-1), in the stems from 35 to 110 mg kg(-1), and in the leaves from 45 to 91 mg kg(-1), vs. average soil total Zn concentrations varying from 526 to 957 mg kg(-1). P. australis showed Zn concentrations in the roots from 39 to 130 mg kg(-1), in the stems from 31 to 63 mg kg(-1), and in the leaves from 37 to 83 mg kg(-1), for the lower average soil total Zn levels of 138 to 452 mg kg(-1) found on the banks where they proliferated. Positive correlations were found between the soil total, available and extractable Zn fractions, and metal accumulation in the roots and leaves of R. ulmifolius and in the roots and stems of P. australis. The use of R. ulmifolius and P. australis for phytoextraction purposes does not appear as an effective method of metal removing, but these native metal tolerant plant species may be used to reduce the effects of soil contamination, avoiding further Zn transfer to other environmental compartments. 相似文献
99.
100.
S. Ferreira M. Cabral N.F. da Cruz P. Simões R.C. Marques 《Waste management (New York, N.Y.)》2014,34(9):1725-1735
Life Cycle Assessment (LCA) has been used to assess the environmental impacts associated with an activity or product life cycle. It has also been applied to assess the environmental performance related to waste management activities. This study analyses the packaging waste management system of a local public authority in Portugal. The operations of selective and refuse collection, sorting, recycling, landfilling and incineration of packaging waste were considered. The packaging waste management system in operation in 2010, which we called “Baseline” scenario, was compared with two hypothetical scenarios where all the packaging waste that was selectively collected in 2010 would undergo the refuse collection system and would be sent directly to incineration (called “Incineration” scenario) or to landfill (“Landfill” scenario). Overall, the results show that the “Baseline” scenario is more environmentally sound than the hypothetical scenarios. 相似文献