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We investigated the changes in element content and distribution in peat profile in a study aimed to monitor the geochemical changes accruing in the process of peat accumulation. Changes in the chemical composition of peat ash and underlying sediments have been studied in the central part of the Ubinskoye bog in the foreststeppe zone of Western Siberia. Two parallel peat cores were sampled to a depth of 310 cm. The upper peat layers are characterized by oxidative environment and increased concentrations of elements...