донні відклади

Sediments can act as pollutant sink as well as source of secondary contamination in aquatic ecosystems. The pollution characteristics of eight heavy metals in the sediments of Ikwu River, Umuahia were investigated using eight assessment indices. The study was carried out between January and June 2022 in three stations. Results showed that cadmium exceeded permissible limit, copper exceeded limit only in February 2022 while others were within limits.

This paper presents the results of first studies concerning the content of black carbon (BC) (which may be played a significant role in the accumulation of dangerous pollutants) in sediments of three reservoirs located in south-eastern Poland. The BC studies made use of the chemical-thermal oxidation method (CTO-375).