FIELD: agriculture.;SUBSTANCE: invention relates to ecology, environment protection and methods and means of monitoring the environment and can be used to monitor pollution of water reservoirs with polychlorinated biphenyls. The method comprises sampling of water, bottom sediments and phytomass of macrophytes, their processing and evaluation, and the phytomass of macrophytes is used as vegetative organs of plants Carex riparia Curt. (coastal sedge) and Typha angustifolia L. (narrow-leaved cattail), sampling is carried out at the beginning and end of the growing season of plants, biological absorption coefficients of contaminant are evaluated as the ratio of content of PCBs in dry mass of macrophytes to their total content in the bottom sediments and in the water, and at the coefficient greater than 2.5±0.43 for coastal sedge and 10.2±1.03 for narrow-leafed cattail, the river pollution is estimated. Developing a simple and objective method of detection of areas of technogenic pollution by polychlorinated biphenyls of water reservoirs of industrialised urban areas enables to take into account the processes of migration and secondary distribution of PCBs in the aquatic environment.;EFFECT: method is intended for use in open water reservoirs, with hydrological studies of the river and its tributaries on storage reservoirs, in the work of environmental organisations, sewage treatment plants and can be implemented in the environmental monitoring of the river system pollution and river water quality.;3 ex, 2 tbl, 2 dwg
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