| Main Title |
Recent Trends in the Acid-Base Status of Surface Waters in Maine, USA. |
| Author |
Kahl, J. S. ;
Haines, T. A. ;
Norton, S. A. ;
Davis, R. B. ;
|
| CORP Author |
Maine Univ. at Orono.;Corvallis Environmental Research Lab., OR. |
| Publisher |
c1993 |
| Year Published |
1993 |
| Report Number |
EPA/600/J-94/464; |
| Stock Number |
PB95-137261 |
| Additional Subjects |
Acidification ;
Surface waters ;
Maine ;
Watersheds ;
Water pollution monitoring ;
pH ;
Deposition ;
Kinetics ;
Water chemistry ;
Lakes ;
Geochemistry ;
Air pollution ;
Reprints ;
Tunk Mountain(Maine) ;
Tunk Mountain Watershed Study ;
ANC(Acid neutralizing capacity)
|
| Holdings |
| Library |
Call Number |
Additional Info |
Location |
Last
Modified |
Checkout
Status |
| NTIS |
PB95-137261 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
| Collation |
12p |
| Abstract |
Data from the EPA Long Term Monitoring Program lakes at the Tunk Mtn Watershed, Maine indicate that decreases of < or - 1 micro eq per L per yr in SO4 and increases of < or - 2 micro eq per L per yr in ANC occurred in the 1980s. The sum of base cations also increased. These changes in aquatic chemistry were coincident with decreased concentrations of all solutes in precipitation during the 1980s. Paleolimnologic studies indicate that decreases of 0.1 to 0.5 pH units occurred in a few small mountain lakes during the past 20 to 70 years. However, no ongoing acidification of lakes is indicated based on available data. Only lakes that were already at least marginally acidic appear to have acidified. |
| Supplementary Notes |
Pub. in Water, Air, and Soil Pollution 67, p281-300 1993. Sponsored by Corvallis Environmental Research Lab., OR. |
| NTIS Title Notes |
Journal article. |
| Title Annotations |
Reprint: Recent Trends in the Acid-Base Status of Surface Waters in Maine, USA. |
| Category Codes |
68D; 68A; 48G; 99F |
| NTIS Prices |
PC A03/MF A01 |
| Primary Description |
600/02 |
| Document Type |
NT |
| Cataloging Source |
NTIS/MT |
| Control Number |
502018835 |
| Origin |
NTIS |
| Type |
CAT |
