MERCURY IN WATER AND BOTTOMSEDIMENTS OFLAKES OF ARCHANGEL''SK CITY AND IT''S SURROUNDING AREA
The aim of the work was to study the bottom sediments of the lakes of one of the largest Northern cities of Russia - Arkhangelsk and its environs for mercury content. The objectives of the study were: to obtain data on the concentrations of mercury in water and sediments of small lakes located in the vicinity of Arkhangelsk, to varying degrees of anthropogenic impact and with different fish population; characteristics of each water body, determination of pH and Eh of water and bottom sediments, mercury content migrating in dissolved and suspended form in water, gross concentrations in bottom sediments by the horizons; comparative analysis of mercury accumulation levels in bottom sediments of the studied lakes and lakes of other regions of the globe; determination of the level of pollution of The following research methods were used: experimental, analytical, historical, classification, etc.