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Registros recuperados: 5
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Polycyclic aromatic hydrocarbons and aromatic plasticiser materials in the sea water of alexandria coastal area OceanDocs
Emara, H.I.; El-Deeb, M.K.Z..
Polycyclic aromatic hydrocarbons (PAHs), the real contaminants of petroleum, were detected in the surface seawater of Alexandria coastal area in winter and spring seasons of 1995. Their order of predominance, particularly for the individual components were principally due to the processes of input, transport and fluxes. Variation of PAHs was not following seasonal changes but it was slightly affected by partial dissolution of the lowerboiling aromatic hydrocarbons. The most abundant component of aromatic hydrocarbons was pyrene (PAH),112ngI-1 followed by naphthalene(56ngI-1) and its alkylated derivatives (dicyclic), then phenanthrene(14ngI-1) and its methylated derivatives (tricyclic). The potential fish carcinogenic PAH, dibenz [a & c] anthracene was...
Tipo: Journal Contribution Palavras-chave: Chemical analysis; Environments; Marine environment; Marine pollution; Oil pollution; Marine environment; Environment; Http://aims.fao.org/aos/agrovoc/c_4610; Http://aims.fao.org/aos/agrovoc/c_2593.
Ano: 2005 URL: http://hdl.handle.net/1834/1217
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Environment And Sustainable Development; The Role Of The Engineer OceanDocs
Ganesan, C.T..
Today when the world stands on the threshold of a new era of ecological awareness and environmental activism it is important to have a clear understanding sustainable development. Different ways of explaining the term, "sustainable development" are discussed. In southern African regions problems of population growth and unbalanced distribution of population are continuously focussing problems to the planners. The impact of sustainability on environment is very well described. In most of urban areas in southern African countries the water is heavily polluted with domestic sewage, industrial effluents and solid wastes. A detailed study in this aspect is made. Rural-urban interface for sustainable development is described with particular relevance southern...
Tipo: Conference Material Palavras-chave: Sustainable development; Role of engineers; Environment; Rural-urban interface; Sustainable development; Environment; Http://aims.fao.org/aos/agrovoc/c_2593.
Ano: 2000 URL: http://hdl.handle.net/1834/688
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Country Profile On Environment : Kenya OceanDocs
Tipo: Report Palavras-chave: Environments; Environment; Http://aims.fao.org/aos/agrovoc/c_2593.
Ano: 2002 URL: http://hdl.handle.net/1834/779
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Pre-concentration and separation of Fe (III), Co (II), Ni (II) and Zn (II) by solid-phase extraction using silica modified with N-propylsalicylaldimine OceanDocs
Hamed, M.A..
N- propylsalicylaldimine based on porous silica, as ion exchanger, was used for the separation and preconcentration of Fe3+, Co2+, Ni2+ and Zn2+ from surface water samples collected from eleven locations at Nile river, Mediterranean and Red seas as well as tap water of Mansoura city. The effects of pH value, time of stirring, concentration of eluting acids and some common ionic species on the separation and preconcentration of the investigated metal ions in synthetic aqueous solutions were studied. The results indicate that the optimum conditions for separation are pH = 9.0-9.5 and time of stirring = 30 min. HCl is better eluent for the investigated metal ions than HNO3 except for Fe3+. Citrate and EDTA gave severe interference on the recovery of the metal...
Tipo: Journal Contribution Palavras-chave: Copper; Efficiency; Environments; Copper; Efficiency; Environment; Http://aims.fao.org/aos/agrovoc/c_1868; Http://aims.fao.org/aos/agrovoc/c_2491; Http://aims.fao.org/aos/agrovoc/c_2593.
Ano: 2005 URL: http://hdl.handle.net/1834/1148
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Enhancing environmental awareness through marine education OceanDocs
Collins, M.A.J..
Throughout this colloquium reference has been made to a number of environmental problems, most of them due to human activities (e.g. clearing mangrove forests, dynamite fishing, sewage pollution, etc.). While attempts are being made to correct these problems through new legislation and educating adults in more environmentally friendly practices, it is my thesis that we should be putting much more effort into the environmental education of young, school-age children since such efforts will, in the long run, have the greater impact on environmental awareness.
Tipo: Working Paper Palavras-chave: Marine environment; Education; Environment; Http://aims.fao.org/aos/agrovoc/c_2488; Http://aims.fao.org/aos/agrovoc/c_2593.
Ano: 1998 URL: http://hdl.handle.net/1834/590
Registros recuperados: 5
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