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Title: Criteria of evaluation of anthropogenic changes and calculation of the anthropogenic component of the dissolved load of rivers

Considerable amounts of chlorine and sodium enter river waters during exploration and operation of oil and gas fields due to lifting highly mineralized formation waters to the surface (the Volga-Ural gas and oil region). Urban and agricultural wastewaters are sources of entry for the components of a salt composition. Magnesium and sulfate ions are considerably inferior to chlorine and sodium with respect to the intensity of involvement in technogenic geochemical flows. Criteria of anthropogenic eutrophication at an early state, methods of separating natural and anthropogenic components of the biogenic runoff (nitrogen and phosphorus compounds) of rivers, and methods of their quantitative calculation have been developed. The results of the calculations for all ions are given. The anthropogenic component of the dissolved load successfully increased. Total dissolved load of the Volga reaches 22%.
Authors:
Publication Date:
OSTI Identifier:
6943564
Resource Type:
Journal Article
Resource Relation:
Journal Name: Water Resour. (Engl. Transl.); (United States); Journal Volume: 12:3
Research Org:
All-Union Scientific-Research Institute of Marine Fisheries and Oceanography
Country of Publication:
United States
Language:
English
Subject:
54 ENVIRONMENTAL SCIENCES; AGRICULTURAL WASTES; ENVIRONMENTAL EFFECTS; WATER POLLUTION ABATEMENT; MUNICIPAL WASTES; URALS; WATERSHEDS; WASTE WATER; CHEMICAL ANALYSIS; EUTROPHICATION; MAGNESIUM COMPOUNDS; NATURAL GAS FIELDS; NITROGEN COMPOUNDS; OIL FIELDS; PHOSPHORUS COMPOUNDS; POLLUTANTS; RUNOFF; SULFATES; VOLGA RIVER; WATER CHEMISTRY; WATER POLLUTION; ALKALINE EARTH METAL COMPOUNDS; CHEMISTRY; ENVIRONMENTAL TRANSPORT; GEOLOGIC DEPOSITS; HYDROGEN COMPOUNDS; LIQUID WASTES; MASS TRANSFER; MINERAL RESOURCES; MOUNTAINS; NATURAL GAS DEPOSITS; ORGANIC WASTES; OXYGEN COMPOUNDS; PETROLEUM DEPOSITS; POLLUTION; POLLUTION ABATEMENT; RESOURCES; RIVERS; STREAMS; SULFUR COMPOUNDS; SURFACE WATERS; WASTES; WATER 520200* -- Environment, Aquatic-- Chemicals Monitoring & Transport-- (-1989)