Chemistry of dissolved organic carbon and organic acids in two streams draining forested watersheds
- Univ. of Illinois, Urbana (United States)
- Univ. of Wyoming, Laramie (United States)
- Univ. of Maine, Orono (United States)
The concentration, major fractions, and contribution of dissolved organic carbon (DOC) to stream chemistry were examined in two paired streams draining upland catchments in eastern Maine. Concentrations of DOC in East and West Bear Brooks were 183 {plus minus} 73 and 169 {plus minus} 70 {mu}mol CL {sup {minus}1}, respectively. Organic acids were the dominant fractions of the stream DOC, with hydrophilic and hydrophobic organic acids representing 44 and 39% of total DOC, respectively. East and West Bear Brooks had mean organic anion concentrations of about 20{mu}eq L{sup {minus}1} during episodic events and 12-13 {mu}eq L{sup {minus}1} during base flow. During the episodic events, the maximum organic anion values were 51 and 36 {mu}eq L{sup {minus}1}, respectively, for East and West Bear Brooks. Although SO{sup 2{minus}}{sub 4} was the dominant stream anion, followed by Cl{sup {minus}}, organic anions were also determined to be an important component of these stream waters, especially during storm events. This illustrates that even in streams with low DOC, such as those studied here, organic anions can contribute significantly to stream acidity.
- OSTI ID:
- 5177043
- Journal Information:
- Water Resources Research; (United States), Vol. 28:2; ISSN 0043-1397
- Country of Publication:
- United States
- Language:
- English
Similar Records
Contrasting stream nitrate and sulfate response to recovery from experimental watershed acidification
Chemistry of dissolved organic carbon and organic acids in two streams draining forested watersheds
Related Subjects
01 COAL, LIGNITE, AND PEAT
MAINE
WATER POLLUTION
ORGANIC COMPOUNDS
WATER CHEMISTRY
STREAMS
ACIDIFICATION
ANIONS
CATIONS
CHLORIDES
FORESTS
ORGANIC ACIDS
SULFATES
WATERSHEDS
CHARGED PARTICLES
CHEMISTRY
CHLORINE COMPOUNDS
DEVELOPED COUNTRIES
HALIDES
HALOGEN COMPOUNDS
IONS
NORTH AMERICA
OXYGEN COMPOUNDS
POLLUTION
SULFUR COMPOUNDS
SURFACE WATERS
USA
540320* - Environment
Aquatic- Chemicals Monitoring & Transport- (1990-)
010900 - Coal
Lignite
& Peat- Environmental Aspects