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Factors Affecting Microbial Degradation of Polycyclic Aromatic Hydrocarbon Phenanthrene in the Caribbean Coastal Water
1999
Zaidi, B.R. | Imam, S.H.
Studies were conducted to assess factors that may influence the rate and extent of biodegradation of polyaromatic hydrocarbons (PAHs) in waters of Guayanilla Bay (latitude, 18°N; longitude, 66.45°W) Puerto Rico. Phenanthrene was used as a model PAHs compound. Both the rate and extent of phenanthrene degradation by natural microbial flora present in seawater samples from Guayanilla Bay were quite slow. Addition of KNO3 as a source of inorganic nitrogen (N) resulted in a 10-fold increase in the rate of phenanthrene degradation within a 125 h period, whereas, addition of K2HPO4 as a source of inorganic nutrient phosphorus (P) had no effect. Phenanthrene degradation was strongly inhibited when seawater pH was adjusted to 10.0. Phenanthrene in seawater samples degraded rapidly when first pretreated with hydrogen peroxide (H2O2) and then inoculated with a known indigenous phenanthrene degrading bacterium, Alteromonas sp. Pretreatment of phenanthrene with Triton-x-100 had little or no effect on its degradation by the same bacteria, whereas, degradation in samples preheated at 60°C was somewhat inhibited.
Afficher plus [+] Moins [-]Storm water pollution control
1999
Dodson, Roy D.
A long-term soil leaching column experiment investigating the effect of variable sulphate loads on soil solution and soil drainage chemistry
1999
Hodson, M.E. | Langan, S.J. (Macaulay Land Use Research Institute, Craigiebuckler, Aberdeen AB15 8QH (United Kingdom))
Effects of Melampsora leaf rust disease and chronic ozone exposure on poplar
1999
Beare, J.A. | Archer, S.A. | Bell, J.N.B. (Department of Biology, Imperial College at Silwood Park, Ascot SL5-7PY (United Kingdom))
Long term measurements of wet deposition and precipitation scavenging of hexachlorocyclohexanes in Southern Norway
1999
Wania, F. | Haugen, J.E. (WECC - Wania Environmental Chemists Corporation, 280 Simcoe Street, Suite 404, Toronto, Ontario, M5T 2Y5 (Canada))
Growth and yield responses of wheat plants to elevated levels of CO2 and SO2, singly and in combination
1999
Deepak, S.S. | Madhoolika Agrawal (Ecology Research Laboratory, Department of Botany, Banaras Hindu University, Varanasi 221 005 (India))
The distribution of 14C-TNT in different biochemical compartments of the monocotyledonous Triticum aestivum
1999
Sens, C. | Scheidemann, P. | Werner, D. (Fachgebiet Zellbiologie und Angewandte Botanik der Philipps Universitat Marburg, D-35032 Marburg (Germany))
Changes in heavy metal contents in an acidic forest soil affected by depletion of soil organic matter within the time span 1969-93
1999
Egli, M. | Fitze, P. | Oswald, M. (Institute of Geography, University Zurich-Irchel, Winterthurerstrasse 190, CH-8057 Zurich (Switzerland))
Quantifying sources of acid neutralisation capacity depression during spring flood episodes in Northern Sweden
1999
Laudon, H. | Bishop, K.H. (Department of Forest Ecology, Swedish University of Agricultural Sciences, SE-901 83 Umea (Sweden))
Economics of water pollution
1999
Murty, M. N. (Maddipati Narasimha) | James, A. J. | Miśra, Smitā
This book introduces readers to the theoretical and applied approaches used to control pollution in developing countries. The first of its kind in the Indian context, it investigates the case for using economic instruments to control environmental pollution, especially water pollution arising from industrial production. This book, dealing as it does with both theoretical and empirical issues, will be of interest to students, teachers and researchers of environmental economics as well as policy-makers. Professionals and activists involved in environmental protection will also find it useful.
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