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111.
Yamamoto F.Y. Pereira M.V.M. Lottermann E. Santos G.S. Stremel T.R.O. Doria H.B. Gusso-Choueri P. Campos S.X. Ortolani-Machado C.F. Cestari M.M. Neto F. Filipak Azevedo J.C.R. Ribeiro C.A. Oliveira 《Environmental science and pollution research international》2016,23(18):18111-18128
Environmental Science and Pollution Research - The Iguaçu River, located at the Southern part of Brazil, has a great socioeconomic and environmental importance due to its high endemic fish... 相似文献
112.
113.
Marcionília Fernandes Pimentel Évila Pinheiro Damasceno Paula Christine Jimenez Pedro Filipe Ribeiro Araújo Marcielly Freitas Bezerra Pollyana Cristina Vasconcelos de Morais Rivelino Martins Cavalcante Susana Loureiro Letícia Veras Costa Lotufo 《Environmental monitoring and assessment》2016,188(5):298
114.
Francisco W. Sousa André G. Oliveira Jefferson P. Ribeiro Morsyleide F. Rosa Denis Keukeleire Ronaldo F. Nascimento 《Journal of environmental management》2010,91(8):1634-1640
This study applies green coconut shells as adsorbent for the removal of toxic metal ions from aqueous effluents using column adsorption. The results show that a flow rate of 2 mL/min and a bed height of 10 cm are most feasible. Furthermore, larger amounts of effluent can be treated for removal of single ions. The breakthrough curves for multiple elements gave the order of adsorption capacity: Cu+2 > Pb+2 > Cd+2 > Zn+2 > Ni+2. Real samples arising from the electroplating industry can be efficiently handled. 相似文献
115.
For assessing the impact of chlorinated compounds, such as organochlorine pesticides, polychlorinated biphenyls, chlorotriazines (atrazine, simazine), and chlorinated phenylureas (diuron), on the Ponta Grossa lake South of Brazil, ten freshwater trahira fish (Hoplias malabaricus) were collected in October 2005. The contamination status was evaluated by the energy budget and various histopathological markers. The results showed detectable amounts of persistent organic pollutants (POPs) in the liver and muscle; the bioaccumulation was higher in the liver than in the muscle. The presence of some banned pesticides, such as hexachlorobenzene and dichlorodiphenyltrichloroethane, in the liver suggests an acute exposure to these compounds. Some physiological disturbances and morphological damages found in the liver of H. malabaricus were associated with chlorinated-compound bioaccumulation. The most important alterations in the liver were lesions such as fibrosis, large necrosis area, leukocyte infiltration, and the absence of melanomacrophages (MM). Individuals containing higher concentrations of pesticides, such as aldrin, alachlor, and dichloroaniline (a metabolite of diuron), showed the nonoccurrence of MM in the liver. These data suggest an immunosuppression in the individuals from Ponta Grossa Lake after exposure to POPs. According to the present data, the POPs found in the studied site are bioavailable, induce severe damages in target organs such as the liver, and can disturb the immune system of the trahira. This is the first study of POPs in the Paraná state, and one among the few studies in the south of Brazil. The present data suggest and motivate further chemical and biomonitoring studies in freshwater ecosystems in the south of Brazil. 相似文献
116.
Dall’Agnol Patricia Libardi Nelson da Silva Eduarda Coradini da Costa Rejane Helena Ribeiro 《Journal of Polymers and the Environment》2022,30(2):695-706
Journal of Polymers and the Environment - The purpose of this study was to investigate the phosphorus (P) adsorption mechanism, kinetic, isothermal and thermodynamic parameters using alginate-like... 相似文献
117.
Virginia Alves Martins Maria Cazelli Lucas Yhasnara Missilene da CristineSilva Layla Barros Saibro Murilo Bobco Fabia Emanuela Rafaloski Rubio Belen Ferreira Bruna Castelo Wellen Fernanda Louzada Santos José Francisco Ribeiro Sara Frontalini Fabrizio Martínez-Colón Michael Pereira Egberto Antonioli Luzia Geraldes Mauro Rocha Fernando Sousa Silvia Helena Mello e Manuel Alveirinho Dias João 《Environmental science and pollution research international》2022,29(46):69652-69679
Environmental Science and Pollution Research - We analyze potential Late Holocene metal contamination along a sediment core collected in the distal zone of Ria de Vigo (North Spain). Statistical... 相似文献
118.
M.C.M. Alvim Ferraz J.I. Barcelos Cardoso S.L. Ribeiro Pontes 《Journal of the Air & Waste Management Association (1995)》2013,63(1):131-136
ABSTRACT The purpose of this paper is to quantify the production of medical waste from a general hospital and to evaluate the atmospheric pollutant concentrations in gaseous emissions associated with its incineration. A 3.8 kg (bed.day)-1 production of medical waste was estimated for 1998; its incineration is related with an ash production of 0.3-0.4 kg (bed.day)-1. The concentrations of atmospheric pollutants were estimated using emission factors, comparing the effluents with and without control of atmospheric pollutants. The calculated concentrations were compared with the emission limits established by Portuguese legislation. The results indicate that, if there is no control of atmospheric pollutants, their concentrations exceed the established limits. This is observed even if correct operation and maintenance procedures are used. The emission concentrations of dioxins are higher than the Portuguese emission limit, which is particularly worrying due to the high toxicity of some of these compounds. Generally, it is possible to reduce pollutant concentrations if appropriate control equipment is used. The conclusions obtained clearly justify the great concern regarding air pollution associated with medical waste incinerators currently operating in Portugal. 相似文献
119.
Guanabara Bay is a 384-km2 coastal bay with 70% of the population of the metropolitan area of Rio de Janeiro located within its drainage basin. The
water quality of the Bay is impacted by domestic and industrial runoff, of which only 15% has been adequately treated. However,
based on a 14-year monitoring program, the water quality for most of Guanabara Bay remains acceptable because of intense tidal
flushing, and we failed to find a worsening of conditions during the 14-year study. The inner shallow regions of the Bay,
the western and northwestern parts, receive most of the drainage from metropolitan Rio de Janeiro. It is here that the water
quality is alarmingly poor, characterized by hypertrophic conditions and occasional hypoxic events. Fecal coliform counts
in these inner reaches of the Bay are 4–100 times higher than the maximum acceptable count for recreational waters. Hypertrophic
conditions prevail in Guanabara Bay, which is characterized by low dissolved oxygen, high biochemical oxygen demand, peaks
in fecal coliform, and extremely high chlorophyll-a concentrations, which reflect high quantities of nutrients entering the system. These anthropogenic pressures are a threat
to planktonic and benthic communities and are reminiscent of San Francisco Bay 30 years ago. The Guanabara Bay water quality
could be returned to pre-1950 conditions, but it would require sufficient political will and economic investment to ensure
that at least 80–90% of the domestic and industrial sewage were treated adequately.
Electronic Publication 相似文献
120.
Andrade Mariana Carvalho Araujo Nara Santos Vianna Maria Isabel Pereira Cangussu Maria Cristina Teixeira Gomes-Filho Isaac Suzart Ribeiro Daniel Araki Cury Patrícia Ramos dos Santos Jean Nunes 《Environmental science and pollution research international》2021,28(43):60717-60725
Environmental Science and Pollution Research - Studies have shown that domestic waste collectors are exposed to toxicants including infectious pathogens, which may be linked to their oral health... 相似文献