Phosphates Ca, Al, Fe in peat of eutrophic peat deposit
Keywords:
phosphorus, phosphoric acid, phosphates, peat deposit, eutrophic swamp, peat, heavy metals, s-, p-, d-metals.Abstract
Phosphates Ca, Al, Fe in peat of eutrophic peat deposit. O.A. GOLUBINA1,3, E.N. TVERYAKOVA1,
I.A. PEREDERINA1, G.A. ZHOLOBOVA1, I.A. IVANOVA1, D.A. MIHALYOV1, YU.YU. MIROSHNICHENKO1,2,
M.V. ZYKOVA1 (1Siberian State Medical University, Tomsk; 2National Research Tomsk Polytechnic University, Tomsk; 3Tomsk State Pedagogical University, Tomsk).
The study of inorganic forms of phosphates in the composition of the Tagan eutrophic peat - marsh ecosystem
(Tomsk Region) has been carried out. The general group composition of inorganic forms of phosphates in peats has been monitored. To evaluate the amount of individual inorganic forms of phosphates, the technique of Chang and Jackson was modified specifically for peat soils. We have experimentally found that phosphorus compounds are represented in the peat deposit mainly in the form of phosphates of Ca, Al, Fe, polynuclear, organic-inorganic complex compounds and in a colloidal state. The largest phosphate concentration has been registered in the upper layer of the peat deposit, on the depth less than a meter. The predominance of aluminum and iron phosphates among inorganic forms of phosphates may be explained due to the oxidizing conditions observed in the depth of 20 centimeter layer of the deposit. The concentration of calcium phosphate is low.
