خيارات البحث
النتائج 1191 - 1200 من 61,240
Carbon isotopic study of the fate of landfill leachate in groundwater.
1977
Games L.M. | Hayes J.M.
Anaerobic activated carbon filter for the treatment of phenol-bearing wastewater [Fish toxicity].
1981
Khan K.A. | Suidan M.T. | Cross W.H.
Viral transport to ground water at a wastewater land application site [Use for irrigation purposes].
1981
Moore B.E. | Sagik B.P. | Sorber C.A.
Deposition of heavy elements on Belgian agricultural soils.
1980
Navarre J.L. | Ronneau C. | Priest P.
A network of 19 rain gauges was set up over Belgium in agricultural zones. Determination of heavy metals content of water samples collected during a 1 yr meteorological cycle allowed to estimate wet plus dry deposition rate of many toxic metals over the country. It appears that soils contamination by deposition exceeds contamination through the use of chemical fertilizers.
اظهر المزيد [+] اقل [-]Characterization and agricultural utilization of swine waste lagoon effluents.
1980
Wilhelm R.G. | Martens D.C. | Hallock D.L. | Collins E.R. | Kornegay E.T.
This investigation was conducted to determine the elemental composition of effluents from three anaerobic swine waste lagoons and one aerobic swine waste lagoon and to evaluate effects of effluent application on growth of corn (Zea mays L.). Wide variation occurred in the elemental composition of effluents among the four lagoons and among four sampling dates from each lagoon. Use of these effluents as irrigation water would lead to application of a wide range in amounts of nutrients to soil. Effluent application increased corn grain yield on a Woodstown loamy fine sand. This yield increase was attributed to alleviation of moisture stress and to correction of N deficiency.
اظهر المزيد [+] اقل [-]Clearance of atrazine in soil describing xenobiotic behavior.
1996
Hari T. | Arx R. von | Ammon H.U. | Karlaganis G.
Monitoring polycyclic aromatic hydrocarbons (PAHs) and heavy metals in urban soil, compost and vegetation.
1995
Niederer M. | Maschka Selig A. | Hohl C.
N-nitrosodimethylamine in drinking water - Using a rapid, solid-phase extraction method.
1995
Jenkins S.W.D. | Koester C.J. | Taguchi V.Y. | Wang D.T. | Palmentier J.F.P. | Hong K.P.
Evaluation of fate and exposure models - Fate of pulp mill effluent compounds in a Finnish watercourse.
1994
Trapp S. | Rantio T. | Paasivirta J.
Chloroorganic chemicals emitted from the pulp and paper mill at Nekoski in central Finland were monitored for several years. Concentration time series are used for evaluating the environmental fate and the applicability and validity of an exposure models. Fitted elimination rates of 3,4,5-Tri-, 4,5,6-Tri-, Tetrachloroguaiacol and 2,4,6-Trichlorophenol are approx. 0.22 per day, or rather the half-lives are approx. 3 days. The elimination is most likely by biodegradation and transport-controlled. For 2,3,6-trichloro-p-cymene, fate simulations indicate significant volatilization and sedimentation. Good agreement is achieved with a one-dimensional steady-state box model, except for concentrations in fish. For a reliable assessment of environmental damage, laboratory experiments, monitoring and simulations need to be in tune.
اظهر المزيد [+] اقل [-]Changes in chemistry and mineralogy of forest soils by acid rain.
1992
Rampazzo N. | Blum W.E.H.
