全文获取类型
收费全文 | 1047篇 |
免费 | 4篇 |
国内免费 | 9篇 |
专业分类
安全科学 | 12篇 |
废物处理 | 42篇 |
环保管理 | 55篇 |
综合类 | 284篇 |
基础理论 | 230篇 |
污染及防治 | 307篇 |
评价与监测 | 65篇 |
社会与环境 | 61篇 |
灾害及防治 | 4篇 |
出版年
2023年 | 7篇 |
2022年 | 31篇 |
2021年 | 20篇 |
2020年 | 9篇 |
2019年 | 10篇 |
2018年 | 33篇 |
2017年 | 33篇 |
2016年 | 53篇 |
2015年 | 20篇 |
2014年 | 58篇 |
2013年 | 63篇 |
2012年 | 38篇 |
2011年 | 67篇 |
2010年 | 42篇 |
2009年 | 42篇 |
2008年 | 51篇 |
2007年 | 54篇 |
2006年 | 50篇 |
2005年 | 43篇 |
2004年 | 30篇 |
2003年 | 21篇 |
2002年 | 21篇 |
2001年 | 21篇 |
2000年 | 9篇 |
1999年 | 11篇 |
1998年 | 6篇 |
1997年 | 14篇 |
1996年 | 6篇 |
1995年 | 6篇 |
1994年 | 12篇 |
1993年 | 4篇 |
1990年 | 7篇 |
1989年 | 9篇 |
1986年 | 8篇 |
1983年 | 6篇 |
1982年 | 5篇 |
1977年 | 7篇 |
1976年 | 11篇 |
1975年 | 4篇 |
1974年 | 4篇 |
1966年 | 6篇 |
1965年 | 6篇 |
1964年 | 5篇 |
1963年 | 6篇 |
1961年 | 8篇 |
1960年 | 7篇 |
1958年 | 3篇 |
1957年 | 8篇 |
1922年 | 3篇 |
1919年 | 3篇 |
排序方式: 共有1060条查询结果,搜索用时 328 毫秒
91.
Francis Douay Aurélie Pelfrêne Julie Planque Hervé Fourrier Antoine Richard Hélène Roussel Bertrand Girondelot 《Environmental monitoring and assessment》2013,185(5):3665-3680
Soil contamination by metals engenders important environmental and health problems in northern France where a smelter (Metaleurop Nord) was in activity for more than a century. This study aims to look at the long-term effects of the smelter after its closedown by combining data on the degree of soil contamination and the quality of the crops grown (agricultural crops and homegrown vegetables) in these soils for a better assessment of the local population’s exposure to Cd, Pb, and Zn. Seven years after the Metaleurop Nord closedown, (1) the agricultural and urban topsoils were strongly contaminated by Cd, Pb, and Zn; (2) the kitchen garden topsoils were even more polluted than the agricultural soils, with great variability in metal concentrations within the gardens studied; (3) a high proportion of the agricultural crops for foodstuffs did not conform with the European legislation; (4) for feedstuffs, most samples did not exceed the Cd and Pb legislation limits, indicating that feedstuffs may be an opportunity for most agricultural produce; and (5) a high proportion of the vegetables produced in the kitchen gardens did not conform with the European foodstuff legislation. The high contamination level of the soils studied continues to be a risk for the environment and the population’s health. A further investigation (part 2) assesses the associated potential health risk for local inhabitants through consumption of homegrown vegetables and ingestion of soil particles by estimating the site-specific human health assessment criteria for Cd and Pb. 相似文献
92.
Babay PA Romero Ale EE Itria RF Becquart ET Thiele B Batistoni DA 《Journal of environmental monitoring : JEM》2008,10(4):443-452
In the present work we have developed an analytical methodology for the determination of nonylphenol (NP) and nonylphenol mono- and di-ethoxylates (NP1EO and NP2EO) in water samples. The applicability of this methodology was proved by means of the analysis of environmentally relevant aqueous samples from Buenos Aires. This constitutes a starting point for a rigorous assessment of the incidence of NPnEO surfactants in Argentina, as only very few, qualitative or semi-quantitative data on the occurrence of these compounds in local systems were available up to this time. Enrichment of the analytes was carried out by solid-phase extraction on a C-18 sorbent, followed by elution with ethyl acetate. Normal-phase high performance liquid chromatography on an amino-silica column and fluorescence detection at excitation-emission wavelengths of 230-300 nm were employed for separation and quantification of the analytes. Confirmation of peak assignment in selected real samples was performed by off-line coupling HPLC with GC-MS analysis. A non-polar GC capillary column was used, and a characteristic peak pattern was obtained for the alkyl chain isomers of each ethoxylated homologue and NP. GC-MS analyses yielded in all cases purity levels higher than 80% for the HPLC collected fractions. The elevated concentrations found for the estrogenic metabolites of NPnEO are in accordance with an unrestricted use of this class of non-ionic surfactants in the country. 相似文献
93.
The comparison of heavy metal accumulation ratios of some fish species in Enne Dame Lake (Kütahya/Turkey) 总被引:1,自引:0,他引:1
Uysal K Köse E Bülbül M Dönmez M Erdogan Y Koyun M Omeroglu C Ozmal F 《Environmental monitoring and assessment》2009,157(1-4):355-362
The metal accumulation levels for muscle, skin, gill, liver and intestine tissues of some Cyprinidae species (Carassius carassius, Condrostoma nasus, Leuciscus cephalus and Alburnus alburnus) in Enne Dame Lake (Kütahya/Turkey), which is mostly fed by hot spring waters, were investigated. Analyses were performed for copper (Cu), zinc (Zn), manganese (Mn), iron (Fe), cobalt (Co), magnesium (Mg), nickel (Ni), chrome (Cr) and boron (B) using inductively coupled plasma-optic emission spectroscopy (ICP-OES), and cadmium (Cd) using atomic absorption spectrophotometer (AAS) utilizing microwave digestion techniques. The concentrations of the heavy metals found in the fish varied in the follow ing ranges: Cu: < DL-7.04, Zn: 6.96-357.25, Mn: < DL-20.70, Ni: < DL-6.21, Fe: 9.62-2500.33, Cr: < DL-1.74, Co: < DL-0.54, Cd: 0.01-0.27 and Mg: 197.44-904.90 mg/kg wet weight. While B had the second highest concentration in the water of the lake, it was not encountered in any tissue of the investigated species. In all tissues and the species, While the bioaccumulation factors (BAFs) of Mn, Zn, Fe and Cu were remarkably high, the BAFs of Mg, Cr, Co, and B were also fairly low or none. Although the heavy metal accumulation levels for the muscle were generally lower than other tissues, there were some exceptions. Cd level in the muscle of C. carassius was higher than the permissible limit stated by Turkish legislation, FAO and WHO. The mean metal amounts for all the investigated tissues and species are statistically compared and discussed in this study. 相似文献
94.
Zafer Ziya Öztürk Cihat Tasaltin Güleda Önkal Engin Ayşe Gül Gürek Devrim Atilla Vefa Ahsen Mahir İnce 《Environmental monitoring and assessment》2009,151(1-4):369-375
Sewage treatment works are one of the major sources that cause atmospheric odour pollution. The increase in the number of complaints about odour nuisance is due to the increase in environmental concerns. Unfortunately, the legislation on odour nuisance from sewage treatment works is very limited. In order to determine suitable thresholds on which to base legal standards, reliable and efficient odour measurement methods need to be defined. A chemical sensor array was developed for the purpose of measuring wastewater odour. This paper describes the development of the chemical sensor system which is specifically tuned to odours of wastewater origin and which can give an electronic measure of the wastewater odours. Odour emissions from a wastewater treatment facility were detected by using a quartz crystal microbalance (QCM) sensor array. The array consists of nine sensor elements, which were coated with different materials. In this paper, the usage of these novel instruments in the water industry was shown. 相似文献
95.
Badreddine Barhoumi Karyn LeMenach Marie-Hélène Devier Walid Ben Ameur Henry Etcheber Hélène Budzinski Jérôme Cachot Mohamed Ridha Driss 《Environmental monitoring and assessment》2014,186(5):2653-2669
To assess the status of polycyclic aromatic hydrocarbon (PAH) contamination in sediments from the Bizerte Lagoon (northern Tunisia), 18 surface sediment samples were collected in March 2011 and analyzed for 14 US Environmental Protection Agency priority PAHs by high-performance liquid chromatography. The total concentrations of the 14 PAHs (ΣPAHs) ranged from 16.9 to 394.1 ng g?1 dry weight (dw) with a mean concentration of 85.5 ng g?1 dw. Compared with other lagoons, coasts, and bays in the world, the concentrations of PAHs in surface sediments of the Bizerte Lagoon are low to moderate. The PAHs’ composition pattern was dominated by the presence of four-ring PAHs (45.8 %) followed by five-ring (26.8 %) and three-ring PAHs (12.7 %). The PAH source analysis suggested that the main origin of PAHs in the sediments of the lagoon was mainly from pyrolytic sources. According to the numerical effect-based sediment quality guidelines of the USA, the levels of PAHs in the Bizerte Lagoon should not exert adverse biological effects. The total benzo[a]pyrene toxicity equivalent values calculated for the samples varied from 3.1 to 53.7 ng g?1 dw with an average of 10.6 ng g?1 dw. 相似文献
96.
Yvan Capowiez Nils Dittbrenner Magali Rault Mickaël Hedde 《Environmental pollution (Barking, Essex : 1987)》2010,158(2):388-393
There is currently a lack of ecotoxicity tests adapted to earthworm species of higher ecological relevance and whose endpoints could be directly related to their ecological role in the soil. We propose a new and relatively simple ecotoxicity test based on the estimation of cast production (CP) by Lumbricus terrestris under laboratory conditions. CP was found to be linearly correlated to earthworm biomass and to be greatly influenced by soil water content. Azinphos-methyl had no effect on CP at all the concentrations tested. Significant decreases were observed at the normal application rate for other pesticides with (imidacloprid, carbaryl, methomyl) or without (ethyl-parathion and chlorpyrifos-ethyl) a clear concentration-effect response. For the highest concentration tested, reduction in CP varied between 35 and 67%. CP is straightforward and rapidly measured and ecologically meaningful. We thus believe it to be of great use as an endpoint in ecotoxicity testing. 相似文献
97.
Predictive value of cardiovascular parameters in stages 1 and 2 of twin-to-twin transfusion syndrome
98.
Human impacts on fire occurrence: a case study of hundred years of forest fires in a dry alpine valley in Switzerland 总被引:2,自引:1,他引:1
Thomas Zumbrunnen Patricia Menéndez Harald Bugmann Marco Conedera Urs Gimmi Matthias Bürgi 《Regional Environmental Change》2012,12(4):935-949
Forest fire regimes are sensitive to alterations of climate, fuel load, and ignition sources. We investigated the impact of human activities and climate on fire occurrence in a dry continental valley of the Swiss Alps (Valais) by relating fire occurrence to population and road density, biomass removal by livestock grazing and wood harvest, temperature and precipitation in two distinct periods (1904–1955 and 1956–2006) using generalized additive modeling. This study provides evidence for the role played by humans and temperature in shaping fire occurrence. The existence of ignition sources promotes fire occurrence to a certain extent only; for example, high road density tends to be related to fewer fires. Changes in forest uses within the study region seem to be particularly important. Fire occurrence appears to have been negatively associated with livestock pasturing in the forest and wood harvesting, in particular during the period 1904–1955. This study illustrates consistently how fire occurrence has been influenced by land use and socioeconomic conditions. It also suggests that there is no straightforward linear relationship between human factors and fire occurrence. 相似文献
99.
Z. Szigeti I. Rácz É. Darkól D. Lásztity E. Lehoczki 《Journal of environmental science and health. Part. B》2013,48(3):599-604
Abstract Paraquat/atrazine coresistant (PqAR) and paraquat resistant (PqR) horseweed (Conyza canadensis /L./ Cronq.) plants showed ‐ in the first hour after 0.5 mM paraquat spraying ‐ a decreased catalase activity followed by a slight increase. However, the enzyme activity remained always below the initial value. Sensitive plants showed a significant increase of catalase activity in the first 4 hour after spraying. The transient character of paraquat inhibition, the recovery of photosyn‐thetic activity of the PqAR Conyza plants (characterized by variable fluorescence) after spraying remained unaffected by the Superoxide dismutase (SOD) inhibitor, diethyldithiocarbamate. This indicates that SOD is not involved in the resistance mechanism. Untreated resistant biotypes showed about 2.5 times higher total polyamine and putrescine level than the sensitive one. 100 μM of exogenously added putrescine was observed as having a protecting effect against paraquat in floated leaves of the sensitive biotype only. The resistant leaves were unaffected probably on account of their higher endogenous polyamine level. It is concluded that polyamines may play a role in the paraquat resistance of Conyza canadensis. 相似文献
100.
Perrier F Richon P Crouzeix C Morat P Le Mouël JL 《Journal of environmental radioactivity》2004,71(1):17-32
Radon-222 activity concentration has been monitored since 1999 in an underground limestone quarry located in Vincennes, near Paris, France. It is homogeneous in summer, with an average value of 1700 Bq m(-3), and varies from 730 to 1450 Bq m(-3) in winter, indicating natural ventilation with a rate ranging from 0.5 to 2.4 x 10(-6) s(-1) (0.04-0.22 day(-1)). This hypothesis is supported by measurements in the vertical access pit where, in winter, a turbulent air current produces a stable radon profile, smoothly decreasing from 700 Bq m(-3) at 20 m depth to 300 Bq m(-3) at surface. In summer, a thermal stratification is maintained in the pit, but the radon-222 concentration jumps repeatedly between 100 and 2000 Bq m(-3). These jumps are due to atmospheric pressure pumping, which induces ventilation in the quarry at a rate of about 0.1 x 10(-6) s(-1) (0.009 day(-1)). Radon-222 monitoring thus provides a dynamical characterisation of ventilation regimes, which is important for the assessment of the long-term evolution of underground systems. 相似文献