خيارات البحث
النتائج 1 - 10 من 13
A biological test system for the evaluation of the phytotoxicity of metal-contaminated soils.
1990
Assche F. van | Clijsters H.
Genetic structure of a naturally regenerating Scots pine population tolerant for high pollution near a zinc smelter.
1992
Prus Glowacki W. | Nowak Bzowy R.
Pollution of camel milk by heavy metals in Kazakhstan
2009
Konuspayeva G. | Faye B. | Loiseau G. | Diacono E. | Akhmetsadykova S.
Environmental contamination by heavy metals is a common fact in Central Asia. In the present study two sampling procedures were achieved: (i) Sampling of fodder, camel raw milk and shubat (fermented camel milk) in 8 farms closed to pollution sources from the South of Kazakhstan for copper, iron, manganese, zinc, arsenic and lead analysis, (ii) sampling of camel milk in 4 regions of Kazakhstan (63 samples) analyzed for lead, chrome and zinc contamination. In first sampling, camel milk contained 0.07 ± 0.04, 1.48 ± 0.53, 0.08 ± 0.03, 5.16 ± 2.17, <0.1 and 0.025 ± 0.02 ppm respectively for Cu, Fe, Mn, Zn, As and Pb. In shubat (fermented milk) the mean content was 0.163 ± 0.164, 1.57 ± 0.46, 0.088 ± 0.02, 7.217 ± 2.55 and 0.007 ppm respectively. Arsenic was detected in some samples of milk and shubat only. The trace elements concentration increase in shubat compared to milk but lead concentration decreased. No clear correlation was observed with fodder composition. In second sampling, the lead content was on average 250 ± 56 ppb in the camel milk with no significant differences between regions. The maximum value was observed at Atyrau (532 ppb). Zinc content in milk (5.42 ± 0.2 ppm) did not change significantly between regions. In reverse, chrome (59.5 ± 45.4 ppb) was higher in Shymkent region compared to others. These values were discussed according to the proximity of pollution sources. Specially, higher concentrations were experienced in fodder from pastures close to some industrial sites or high traffic road. (Résumé d'auteur)
اظهر المزيد [+] اقل [-]Some data about the global pollution (fluorine pollution particularly) in Annaba area (Algeria)
1993
Semadi, A. (Universite de Annaba (Algerie). Institut des sciences de la Nature)
[Prevention of a TCP/PCE contamination in the unsaturated zone and the saturated zone]
1995
Larsen, T. | Noerregaard, L. (Det Danske Hedeselskab, Viborg (Denmark))
Horizontal distribution of copper, nickel and enchytraeid worms in polluted soil
1999
Salminen, J. | Haimi, J. (Department of Ecological and Environmental Sciences, University of Helsinki, Niemenkatu 73, FIN-15210 Lahti (Finland))
Optimizing air quality management in Europe and North America: justification for integrated management of both oxidized and reduced forms of nitrogen
1998
Cowling, E.B. | Erisman, J.W. | Smeulders, S.M. | Holman, S.C. | Nicholson, B.M. (College of Forest Resources, North Carolina State University, Box 8002, Raleigh, NC 27695 (USA))
[Registration: problems and practise [industrial sites]]
1992
Clement, P. (Aarhus Amt (Denmark))
Evaluation of the factors relating combined sewer overflows with sediment contamination of the lower Passaic River
1996
Shear, N.M. | Schmidt, C.W. | Huntley, S.L. | Crawford, D.W. | Finley, B.L. (ChemRiskreg trade mark-A Division of McLaren/Hart, 1685 Congress Street, Portland, ME 04102 (USA))
Attempts at integrated coastal management in a developing country
1996
Yap, H.T. (Marine Science Institute, University of the Philippines, Diliman, 1101 Quezon City (Philippines))
