NDLI: Trends in Water Chemistry of Acidified Bohemian Lakes from 1984 to 1995: II. Trace Elements and Aluminum

Content Provider	Springer Nature Link
Author	Veselý, Josef Hruška, Jakub rton, Stephen A.
Copyright Year	1998
Abstract	The concentrations of Al, Be, Cd, Cu, F, Fe, Mn, Pb, and Zn were monitored in five glacial lakes and one man-made lake in the southwestern part of the Czech Republic. The lakes had median pHs of 4.4 to 6.5 during 1984 to 1995. Decreases in the concentrations of Mn and Pb occurred in five acidified lakes. The concentrations of Al$_{T}$, Be, Cd, and F decreased in the four chronically acidified lakes, Zn decreased in two lakes. Concentrations of Cu and Fe remained unchanged. The decreases in Be, Mn, and Zn concentrations were proportional to the decrease in C$_{SA}$ (C$_{SA}$ = SO$_{4}$ $^{2-}$ + NO$_{3}$ $^{-}$+ Cl$^{-}$); decreases in Al$_{T}$, Cd, and Pb concentrations were proportionately higher, while F was lower. The greater decrease in the Pb concentrations (61 to 79%, at a rate up to 0.15 μg L$^{-1}$yr$^{-1}$) was caused by pronounced decreases in deposition of Pb derived from mobile sources. The decrease of Al$_{T}$ concentrations was dominated by a decrease in Al$^{3+}$, whose concentration decreased by 51 to 86%. The concentrations of complexes Al(OH)$^{2+}$, Al(OH)$_{2}$ $^{+}$, AlF$^{2+}$, and AlH$_{3}$SiO$_{4}$ $^{2+}$ also decreased. The decrease in the concentrations of inorganic forms of Al (Al$_{i}$) compensated 65% of the decrease in C$_{SA}$. The Cd concentrations were highly variable in the years 1986 to 1988 because of variable amounts of accumulation on particles.
Starting Page	425
Ending Page	443
Page Count	19
File Format	PDF
ISSN	00496979
Journal	Water, Air, and Soil Pollution
Volume Number	108
Issue Number	3-4
e-ISSN	15732932
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	1998-01-01
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Hydrogeology Atmospheric Protection/Air Quality Control/Air Pollution
Content Type	Text
Resource Type	Article
Subject	Ecological Modeling Environmental Chemistry Pollution Environmental Engineering Water Science and Technology

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