RT Journal Article ID 704bc9646f07c4f2 A1 Parfenova, G. K. T1 Anthropic Changes in the Salt Composition of Water of Rivers of the Upper Reaches of the Ob' River Basin JF Hydrobiological Journal JO HYD YR 2002 FD 2002-12-01 VO 38 IS 6 OP 10 AB Data of long term (1954-1993) hydrochemical studies of rivers of the upper reaches of the Ob' river basin (the Western Siberia, Russia) were generalized. It has been found that the ion-salt composition of water, including НСО3-, SO42-, Сl-, Ca2+ Mg2+ and Na+ + K+ ions and their sum, changed depending on the composition of industrial sewage, volume of annual runoff, water consumption, and also on the hydrological regime of the studied rivers. PB Begell House LK https://www.dl.begellhouse.com/journals/38cb2223012b73f2,39f87d0b678d1ae4,704bc9646f07c4f2.html