Main Title |
Organic Acidity in Maine (U.S.A.) Lakes and in HUMEX Lake Skjervatjern (Norway). |
Author |
David, M. B. ;
Vance, G. F. ;
Kortelainen, P. ;
|
CORP Author |
Illinois Univ. at Urbana-Champaign. ;Wyoming Univ., Laramie. ;National Board of Waters and the Environment, Helsinki (Finland).;Corvallis Environmental Research Lab., OR. |
Publisher |
c1991 |
Year Published |
1991 |
Report Number |
EPA/600/A-92/291; |
Stock Number |
PB93-141166 |
Additional Subjects |
Acidification ;
Lakes ;
Water pollution ;
Organic acids ;
Water chemistry ;
United States ;
Maine ;
Norway ;
Surface waters ;
Humus ;
Soil chemistry ;
Ecosystems ;
Anions ;
Reprints ;
Dissolved organic carbon
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB93-141166 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
9p |
Abstract |
Organic acids, a component of dissolved organic carbon (DOC), can be a major factor in the acidity of many lakes and streams. In order to evaluate the importance of organic acidity, we fractionated (hydrophobic acids and neutrals, hydrophilic acids, bases, and neutrals) and isolated hydrophobic and hydrophilic acids from several Maine seepage and drainage lakes, and from each half of Lake Skjervatjern. For all lakes where DOC was isolated, hydrophilic acids consistently had greater exchange acidities compared to hydrophobic acids. Overall, lake DOC charge relationships and fractions were similar to forest floor DOC leachate chemistry that was also examined in detail at a site in Maine. This suggests that the nature of DOC in the temperate to boreal ecosystems studied (e.g., high carboxylic functional group content) is rather similar regardless of source (e.g., upland soil leachates, wetlands, or Sphagnum deposits). |
Supplementary Notes |
Pub. in Proceedings of the International Nordic Symposium on Humic Substances (3rd), Turku, Finland, August 21-23, 1991, p189-194. Prepared in cooperation with Wyoming Univ., Laramie, and National Board of Waters and the Environment, Helsinki (Finland). Sponsored by Corvallis Environmental Research Lab., OR. |
NTIS Title Notes |
Symposium paper. |
Title Annotations |
Reprint: Organic Acidity in Maine (U.S.A.) Lakes and in HUMEX Lake Skjervatjern (Norway). |
Category Codes |
68D; 48G; 57H; 99F |
NTIS Prices |
PC A02/MF A01 |
Primary Description |
600/02 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
307031235 |
Origin |
NTIS |
Type |
CAT |