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In 2015-2020 the content of heavy metals and metalloids in the river bottom sediments in Kaliningrad region was studied. Definition of arsenic, lead, zinc, copper, and vanadium, iron, manganese, titanium, aluminum was carried out in water samples and in the samples of bottom and floodplain sediments in the watercourses, flowing into the Curonian Lagoon, in the Baltic Sea and in Kaliningradsky (Vistula) Lagoon, as well as in the watercourses of the southern part of the Kaliningrad region. The composition and patter...

The article discusses the possibility of using permanganate oxidizable carbon (POxC, active carbon) as a comprehensive indicator for assessing the state of oil contaminated soils and bottom sediments. POxC has recently emerged as a standardized indicator of active, labile carbon within soil quality frameworks. According to the study, the application of this indicator of the ecological wellbeing of water body is possible since bottom sediments and soils are complex natural biogeochemical barrier zones. Bottom sedim...