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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.
Show more [+] Less [-]Airborne trichloroacetic acid and its deposition in the catchment area of the Caspian sea
1999
Weissflog, L. | Manz, M. | Popp, P. | Elansky, N. | Arabov, A. | Putz, E. | Schuurmann, G. (UFZ-Centre for Environmental Research, Department of Chemical Ecotoxicology, PF 2, 04301 Leipzig (Germany))
Accelerated hydrolysis of industrial organophosphates in water and soil using sodium perborate
1999
David, M.D. | Seiber, J.N. (Center for Environmental Sciences and Engineering, University of Nevada, Reno, NV 89557 (USA))
Pesticide residue assessment in three selected agricultural production systems in the Choluteca River Basin of Honduras
1999
Kammerbauer, J. | Moncada, J. (Pan-American Agricultural School, Zamorano, Apartado Postal 93, Tegucigalpa (Honduras))
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))
Aquatic bryophytes for a spatio-temporal monitoring of the water pollution of the rivers Meuse and Sambre (Belgium)
1999
Vanderpoorten, A. (Faculte Universitaire des Sciences Agronomiques de Gembloux, Zoologie Generale and Appliquee, 2, Passage des Deportes, B-5030 Gembloux (Belgium))
Assessment and rehabilitation of wildlife affected by an oil spill in Puerto Rico
1999
Mignucci-Giannoni, A.A. (Red Caribena de Varamientos, Caribbean Stranding Network and University of Puerto Rico, PO Box 361715, San Juan, 00936 (Puerto Rico))
Concentrations of alkyphenol polyethoxylates entering UK estuaries
1999
Blackburn, M.A. | Kirby, S.J. | Waldock, M.J. (Centre for Environment, Fisheries and Aquaculture Science, Burnham on Crouch, Essex CM0 8HA (United Kingdom))
Mesocosm assays of oil spill bioremediation with oleophilic fertilizers: Inipol, F1 or both?
1999
Santas, R. | Korda, A. | Tenente, A. | Buchholz, K. | Santas, P. (OikoTechnics Institute, 50 Kefallenias st, A. Helioupolis 16 342 (Greece))
Organochlorines in sea water and suspended particulates from Scottish coastal sites
1999
Balls, P.W. | Campbell, D.C. (FRS Marine Laboratory, P.O. Box 101, Victoria Road, Aberdeen AB11 9DB (United Kingdom))
