title: [Presence of specific contaminants in waters of the Reda and Bolszewa rivers].
abstract: During 3 years the water was studied in the Reda river and its main tributary Bolszewka (1981-1984) for determining the levels of heavy metals (manganese, lead, zinc, copper, mercury), phenols volatile with water vapour, anion detergents and fats and oils expressed as ether extract. Moreover the outflow of these contaminants was determined from the confluence of both rivers. The levels of lead, anion detergents and ether extracts in the water in the Bolszewka river were compatible with class I of water purity, while the remaining values exceeded several times those permissible for class I of water purity. Manganese and volatile phenols were present at the level of class III of purity, while zinc was even above that level. The outflow of most contaminants from the confluence of Reda and Bolszewka rivers in 1981/1982 was higher than in the following years which was due to a high outflow in that period, while in the last year a decreasing tendency was noted.
authors.forename: T
authors.initials: T
authors.lastname: Bogacka
authors.forename: E
authors.initials: E
authors.lastname: Heybowicz
mesh_terms: D003902:Detergents / Q000032:analysis; D005618:Fresh Water; D008670:Metals / Q000032:analysis; D010636:Phenols / Q000032:analysis; D011044:Poland; D014873:Water Pollutants / Q000032:analysis*; D014874:Water Pollutants, Chemical / Q000032:analysis*
chemical_list: D003902:Detergents; D008670:Metals; D010636:Phenols; D014873:Water Pollutants; D014874:Water Pollutants, Chemical
vernacular_title: Wystepowanie specyficznych zanieczyszczeń w wodach rzek redy i bolszewki.