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5B b - RA: Site Specific (TH4/4) Ecotoxicological evaluation of wastewater originated on motorways. Koĉí, Vladimír1, Ocelka, Tomáŝ2, Mareŝová, Vilma3, Muzikantová, Kamila1, Kochánková, Lucie1, Grabic, Roman2, Crhová, árka2, 1 Institute of Chemical Technology, Prague, Praha, Czech Republic2 National Health Institute, Frýdek-Místek, Moravskoslezský kraj, Czech Republic3 Transport Research Centre, Brno, Jihomoravský, Czech Republic ABSTRACT- The aim of this work is to evaluate an environmental risk caused by waters originated from the motorways. Water from the surface of highway is collected into receiving collectors, small settlers. An excess of waste water is freely discharged in surrounding regions in Czech Republic. Water of these receiving collectors was sampled with semipermeable membrane devices (SPMDs) and analyzed for its level of POP contamination. These chemical parameters were assessed: PCBs, PAHs, PCDD/Fs, OCPs and dioxins. Hands by hand with chemical analysis toxicity tests of obtained extracts from exposed SPMDs were provided. Following toxicity tests were used: inhibition of luminescence of bacterium Vibrio fischeri, inhibition of growth of green algae Scenedesmus subspicatus and immobilization test of crustacean Daphnia magna. Values of obtained EC50s were compared to values of main Czech rivers sampled with the same passive sampling method. There was found that flush water from motorways cause serious risk to water and soil environment. Key words: SPMD, toxicity-testing, motorways, POPs |
