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HP9 Environmental Assessment, Environmental Toxicology
() integrating ecotoxicology and analytical chemistry for the assessment of water quality.
Mankasingh, U1, Worsfold, P1, Galloway, T2, Depledge, M3, 1 School of Earth, Ocean and Environmental Sciences, Plymouth Environmental Research Centre, University of Plymouth, Plymouth, Devon, England, UK2 School of Biological Sciences, University of Plymouth, Plymouth, Devon, England, UK3 Environment Agency, Bristol, Avon, England, UK
ABSTRACT- The EU Water Framework Directive aims to maintain and improve the quality of aquatic ecosystems by using an integrated approach to the protection, improvement and sustainable use of the water environment. Nitrate and nitrite concentrations in natural waters have maximum admissible concentrations set by the EU for surface waters intended for abstraction for drinking water (11.3 mg L-1 NO3-N) and for the protection of course freshwater fish (9 g L-1 NO2-N) respectively. However, in cases of extreme pollution, concentrations may be as high as 1 mg L-1 NO2-N in waters strongly influenced by industrial effluent, or 200 mg L-1 NO3-N in sewage polluted waters.
Key words: Anodonta cygnea, nitrite, environmental assessment, ecotoxicology
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