Vovk K. Geochemistry of microelements in the environmental objects of Kyiv aglomeretion

The thesis is devoted to the study of the features of microelements distribution in environment objects (superficial deposits, vegetation and mushrooms- makromitseta) of the Kiev agglomeration. Detailed ecological and geochemical researches of the territories getting to a zone of influence of ecological dangerous undertakings of Kiev are given. For each object it is determined extent of pollution. It is defined by the physical and chemical and granulometric features of the polluted soils. Stay forms and mobility of microelements in superficial deposits of the Kiev agglomeration are established. Pilot study of solubility and complex formation of heavy metals in the fulvic solutions is conducted, constants of firmness of zirconium, cadmium, zinc and lead with fulvic acid are calculated. The way of definition of cadmium, nickel, lead and beryllium in natural waters at given pH values by a mass spectrometry method with the induction and connected plasma (ICP-MS) after their concentration with the help of a composite chelate phosphate cellulose sorbent is developed and patented. For vegetation of Kiev more intensive accumulation of microelements in comparison with vegetation of the Kiev Polesie is observed. Each species of a tree is characterized by special geochemical specialization: the birch concentrates copper, lead, zinc, nut – selenium, an oak – manganese and vanadium. It is establish that concentration of heavy metals in mushrooms of the polluted territories 10 times more, than in the forest and green space. It is developed composition of biologically active mix on the basis of the waste of sugar production, phosphoric acid and sylvinite. This mix can be used for the agricultural purposes and also for improvement of growth and quality of green plantings of the city.