sediment

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).

The contamination of aquatic and terrestrial ecosystems with heavy metals and other mining chemicals have been major environmental problems in many mining areas of the world. Industrial wastes, geochemical structure and metals mining form a potential source of metal contaminants in the aquatic environment especially in sediment. Monitoring sediment quality is one of the highest priorities in environmental protection policies.

The modern native geo- and hydro-acoustic complex usinged as the study of interconnection between processes in waters and sediments as elements of the difficult geo- and hydrodynamic system is proposed. This previous sentence is totally vague and unclear, after reading it several times over several days I do not know its meaning or intent. Please, what is connected? What is proposed? The relevance of sub-bottom profiling is noticed and it is considered the item of joint presentation for results in bottom survey and its ground maps as three-dimensional (3 D) images.