Abstract
This study is devoted to the analysis of the distribution of heavy metals in the aquatic system of the Barguzin River. This is one of the largest rivers of the Baikal lake system. The element composition of the aerial scion of Potamogeton pectinatus L. (syn. Stukenia pectinata (L.) Borner), Potamogeton perfoliatus L., Hippuris vulgaris L. and Nymphoides peltata (S.G. Gmelin) O. Kuntze of the Barguzin River is studied in this research. One of the main results of the study is the establishment of the following sequence of the accumulation of metals in aquatic plants: Mn > Fe > Сu (Zn) > Сr > Ni > Сo > Pb > Cd > Hg. Hippuris vulgaris L. contains the highest concentration of the studied metals. Thus, this research provides one of the important steps for the development of regional environmental standards and environmental risk assessments.
Highlights
Due to the technogenic pollution of surface waters with pollutants, the issue of availability and the quality of fresh water is becoming more acute for humanity
Data on the microelement composition of aquatic plants can be used to detect both the initial stages of pollutants emission into water bodies and long-term systematic anthropogenic impacts
The distribution of metals in aquatic plants of the Barguzin River has been studied for the first time
Summary
Due to the technogenic pollution of surface waters with pollutants, the issue of availability and the quality of fresh water is becoming more acute for humanity. It is well known that aquatic plants intensively absorb macro- and microelements, mineral and organic substances, accumulate heavy metal ions and radionuclides, and are associated with mineralizers and detoxicants, as well as biofilters of pesticides and oil products [3,4,5]. They are used as objects of indication and monitoring of water quality, eutrophication and pollution of water bodies, and can be industrial raw materials [6,7,8,9,10,11].
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