The influence of physico-chemical properties of sediments on the sorption capacity on the example of reservoirs of the leningrad region

Author(s):  O.I. Venediktova, Herzen State Pedagogical University of Russia, Saint-Petersburg, Russia, olga513@list.ru

O.G. Rogovaya, Dr., Prof., Herzen State Pedagogical University of Russia, Saint-Petersburg, Russia, olgarogovaya@mail

I.U. Tikhomirova, candidate of Sciences, associate Professor, Herzen State Pedagogical University of Russia, Saint-Petersburg, Russia, itikhomirоva55@mail.ru

Issue:  Volume 41, №25

Rubric:  Chemical sciences

Annotation:  Studies of the upper (0–5 cm) layer of bottom sediments of three lakes of the Leningrad Region were carried out. The granulometric composition, the density of the solid phase, the content of organic substances, iron, manganese and phosphorus have been studied. Sorption properties of bottom sediments with various physicochemical parameters, the capacity of a monolayer of adsorbed water, the limiting sorption volume, the specific surface area, the possible mechanisms of sorption of iron, manganese and phosphorus are considered. It has been shown that these characteristics are informative in the aspect of the activity of the biota of the reservoir. Active silt can be referred to the most interesting type of the bottom sediments and its detection in the central part of Lake Gusinoye indicates a great potential for resisting anthropogenic load, especially with regard to contamination by organic compounds.

Keywords:  reservoirs, bottom sediments, sorption capacity.

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