%0 Journal Article %T DETERMINING THE DEGREE OF TOXICITY OF NATURAL SURFACE WATER POLLUTED WITH OIL PRODUCTS BY METHODS NUMERICAL CHEMICAL ANALYSIS AND BIO-TESTING %A Fomicheva, G.. %A Fyodorova, I.. %A Kamakin, A.. %K river Volga, oil pollution, bioassay, quantitative chemical analysis, bio-test, test-organism, Daphnia magna, toxiс effect, harmless concentration, lethal concentration %J Vestnik of Astrakhan State Technical University. Series: Fishing industry %D 2016 %N %P 7 %I Astrakhan State Technical University