SPATIAL VARIABILITY OF HEAVY METALS IN THE SEDIMENTATIONS OF THE SAUS PART OF THE KUYALNIK ESTUARY

Abstract

The Sediments of the are among the possible means of summarizing information on the status of aquatic ecosystems and transfers of pollutants in the aquatic environment. The purpose of this study was to evaluate the content and dynamics of many years (2000-2013) the distribution of heavy metals (Pb, Cd, Cu, Cr, V, Zn, Mn, Al, Fe) in the sediments and waters of the southern part of Kuyalnik estuari-the area around the resort Kuyalnik and extracting the medicinal sulphide silts (peloid). The paper presents an approach from the perspective of geochemical assessment of the ecological state of the estuary Kuyalnik. The elements in the samples the sediments and waters was determined by atomic absorption spectrometry with a spectrophotometer atomization “Saturn 3” using graphite furnace “Graphite-2”. The level of contamination of the sediments is assessed based on the results of the comparison of the actual content with their natural content (klarkami of the lithosphere). The assessment of ecological state was based on the total score of the metal contamination. It is shown that the spatial distribution of metals depends on the location of local sources of anthropogenic pollution, as well as the mechanical composition and types of deposits. The geochemical background is characterized by high content in Sediments of Cd, Pb, V, Zn which are mobile in terms of highly mineralized brines. The Study of metals according to the average over many years content in sediments estuary Kuyalnik form a decreasing series: Fe> Al ≥ Zn ≥ V> Cu ≥ Pb> Mn ≥ CR> Cd. In terms of the total heavy metal contamination the bottom sediments are characterized as moderately hazardous.

Keywords

• Куяльницький лиман, донні відкладення, важкі метали, міграція, геохімічний фон