Selenium in Kesterson Reservoir ephemeral pools formed by groundwater rise: II. Laboratory experiments

Journal Article · · Journal of Environmental Quality; (United States)

DOI:https://doi.org/10.2134/jeq1992.00472425002100020016x· OSTI ID:7161847

Poister, D; Tokunaga, T K ^[1]

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1. Lawerence Berkeley Lab., CA (United States)

The formation of seleniferous ephemeral pools that result from shallow water table rise through seleniferous soils was studied in laboratory columns of soils from Kesterson Reservoir, Merced County, California. Variables included in the column experiments included the depth interval of the soils, the rate of shallow water table rise and temperature. The columns were packed with either surface soils, or subsurface soils sampled from the southwest corner of Pond 1, Kesterson Reservoir. Controlled inputs of nonseleniferous, saline water through the bottoms of the columns provided water table rise rates of 3, 10 and 30 mm d[sup [minus]1]. The soil columns were maintained at either room temperature ([approx]25 C) or 5 C. The amount of Se transported from the soils into the overlying ponding waters was proportional to the water-extractable soil Se content, and was positively correlated with the rate of water table rise. The 5 C experiments resulted in greater Se transfers into the ponding waters in the columns subjected to 10 and 30 mm d[sup [minus]1] rates of water table rise, while the reverse effect was observed with 3 mm d[sup [minus]1] columns.

• DOE Contract Number: AC03-76SF00098
• OSTI ID: 7161847
• Journal Information: Journal of Environmental Quality; (United States), Journal Name: Journal of Environmental Quality; (United States) Vol. 21:2; ISSN JEVQAA; ISSN 0047-2425
• Country of Publication: United States
• Language: English

Related Subjects

54 ENVIRONMENTAL SCIENCES
540220* -- Environment
Terrestrial-- Chemicals Monitoring & Transport-- (1990-)
540320 -- Environment
Aquatic-- Chemicals Monitoring & Transport-- (1990-)
CALIFORNIA
CONTAMINATION
DEVELOPED COUNTRIES
ECOLOGICAL CONCENTRATION
ELEMENTS
ENVIRONMENTAL TRANSPORT
LAND POLLUTION
MASS TRANSFER
MONITORING
NORTH AMERICA
POLLUTION
SELENIUM
SEMIMETALS
SOILS
SURFACE WATERS
USA
WATER POLLUTION
WATER RESERVOIRS