Reactions that modify chemistry in lakes of the national surface water survey

Journal Article · Mon Feb 01 04:00:00 EST 1988 · Environmental Science and Technology; (USA)

DOI:https://doi.org/10.1021/es00167a010· OSTI ID:5608381

Lee, S; Schnoor, J L ^[1]

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1. Univ. of Iowa, Iowa City (USA)

A simple mass balance equation was used to determine the important reactions that occur in selected lake watersheds of the Adirondack Park, the Southern Blue Ridge Province of the Appalachian Mountains, and a portion of northern Florida. The mass balance requires only three input parameters: precipitation ion concentration, lake ion concentration, and an evapoconcentration factor appliable to the watershed. It was determined that the most important alkalizing reaction in all three study areas was the production of base cations (Ca{sup 2+}, Mg{sup 2+}, and Na{sup +}) by ion exchange and chemical weathering, followed by sulfate adsorption in the Southern Blue Ridge watersheds and nitrate assimilation/reduction in the Adirondack Park. Dry deposition of sulfate was important to the sulfate balance in the Adirondack watersheds and was f the same order of magnitude as wet precipitation inputs. Chloride ion could not be used to provide an independent check on the mass balance methodology because unmeasured sources such as dry deposition and mineral dissolution appeared to be significant, especially in the Southern Blue Ridge Province and Florida watersheds.

• OSTI ID: 5608381
• Journal Information: Environmental Science and Technology; (USA), Journal Name: Environmental Science and Technology; (USA) Vol. 22:2; ISSN ESTHA; ISSN 0013-936X
• Country of Publication: United States
• Language: English

Related Subjects

520200* -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
ADSORPTION
ALKALI METALS
ALKALINE EARTH METALS
CALCIUM
CATIONS
CHARGED PARTICLES
CHEMICAL REACTIONS
CHEMISTRY
DEPOSITION
ELEMENTS
ENVIRONMENTAL EFFECTS
IONS
LAKES
MAGNESIUM
METALS
NITRATES
NITROGEN COMPOUNDS
OXYGEN COMPOUNDS
POLLUTION
REDUCTION
SODIUM
SORPTION
SULFATES
SULFUR COMPOUNDS
SURFACE WATERS
SURVEYS
WATER CHEMISTRY
WATER POLLUTION