Оценка зависимости концентраций тяжелых металлов от водородного показателя в малых озерах бассейна реки Надым

The estimation of the pollution of surface water from small lakes in the basin of the Nadym river with heavy metals and the relationship of their concentrations with the reaction of the water environment. Metal concentrations of pollutants in surface waters of small lakes do not exceed natural background levels. High content of iron, manganese, copper and zinc in surface waters of lakes surveyed due to natural factors. In the acidic environment increases the mobility of ions of lead, chromium and aluminum, which increases the potential negative effects of heavy metals to aquatic organisms.