Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Role of Nitrate in the Acidification of Streams in the Catskill Mountains of New York.
Author Murdoch, P. S. ; Stoddard, J. L. ;
CORP Author Geological Survey, Albany, NY. ;ManTech Environmental Technology, Inc., Corvallis, OR.;Corvallis Environmental Research Lab., OR.;New York City Dept. of Environmental Protection.
Publisher c1992
Year Published 1992
Report Number EPA-68-C8-0006; EPA/600/J-93/008;
Stock Number PB93-150167
Additional Subjects Water pollution sampling ; Acidification ; Inorganic nitrates ; Streams ; Stream flow ; Air water interactions ; Deposition ; Nitric acid ; Catskill Mountains ; New York ; Surface waters ; Long term effects ; Water chemistry ; Data collection ; Runoff ; Biological effects ; Reprints ;
Library Call Number Additional Info Location Last
NTIS  PB93-150167 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/12/1993
Collation 16p
Research on the effects of acidic deposition in the United States has focused largely on the role of sulfur deposition in the acidification of surface waters. Results from both long-term (up to 70 years) and recent monitoring of stream chemistry in the Catskill Mountains of New York indicate, however, that nitric acid has a significant and increasing role in surface water acidification that, during high-flow periods, rivals the role of sulfuric acid. Nitrate increases with increased stream flow throughout the year except during the late summer, when biological activity and its attendant nitrogen uptake are greatest; peak concentrations as high as 128 micrograms/l have been recorded during spring snowmelt. In contrast, sulfate concentrations decrease with increased flow. (Copyright (c) 1992 by the American Geophysical Union.)