OLS : Record


Main Title Alkalinity Regulation in Softwater Florida Lakes.
Author Baker, L. A.; Pollman, C. D.; Eilers, J. M.;
CORP Author Northrop Services, Inc./Environmental Sciences, Corvallis, OR. ;KBN Engineering and Applied Sciences, Inc., Gainesville, FL. ;Minnesota Univ., Minneapolis. Dept. of Civil and Mining Engineering.;Corvallis Environmental Research Lab., OR.
Publisher c1988
Year Published 1988
Report Number EPA-68-03-3246; EPA/600/J-88/415;
Stock Number PB90-110081
Subjects Alkalinity; Water chemistry; Lakes; Watersheds; Atmospheric composition; Florida; Air water interactions; Cations; Hydrology; Chemical reactions; Precipitation(Meteorology); Sulfates; Inorganic nitrates; Water pollution; Ground water; Concentration(Composition); Reprints; Wet methods; Dry methods; Chlorine ions
Library   Call Number Additional Info Location Date Modified
NTIS PB90-110081 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 03/10/1990
Collation 16p
Abstract Major ion chemistry data collected as part of the Environmental Protection Agency (EPA) Eastern Lake Survey was examined to evaluate the mechanisms and extent of alkalinity regulation in 37 undisturbed, softwater lakes in Florida. Comparison of major ion-Cl ratios in atmospheric deposition and in lakewater shows the reactions resulting in retention of sulfate and nitrate are the dominant sources of alkalinity; production of organic acids and ammonium retention are the major alkalinity-consuming processes. Based on average reactions, enrichment of major cations accounted for only 12% of net alkalinity generation in the study lakes. In general, calcium and potassium were depleted in low ANC lakes, presumably by in-lake sinks, and were enriched in most higher ANC lakes by groundwater inputs. Differences in alkalinity among these lakes reflect hydrologic factors and the proximity of clay and carbonate deposits to the lake bed. Overall, net alkalinity generation nearly balanced H+ predicted from evaporative concentration of atmospheric acid inputs; the close balance suggests that the alkalinity status of these lakes is very sensitive to changes in atmospheric loadings and groundwater alkalinity inputs. (Copyright (c) 1988 by the American Geophysical Union.)
Supplementary Notes Pub. in Jnl. of Water Resources Research, v24 n7 p1069-1082 Jul 88. Prepared in cooperation with KBN Engineering and Applied Sciences, Inc., Gainesville, FL., and Minnesota Univ., Minneapolis. Dept. of Civil and Mining Engineering. Sponsored by Corvallis Environmental Research Lab., OR.
NTIS Title Notes Journal article.
Title Annotations Reprint: Alkalinity Regulation in Softwater Florida Lakes.
Category Codes 48G; 68D; 99F
NTIS Prices PC A03/MF A01
Primary Description 600/02
Document Type NT
Control Number 935217382
Cataloging Source NTIS/MT
Origin NTIS
Type CAT