Aluminum precipitation and dissolution rates in spodosol bs horizons in the northeastern USA

Technical Report · Sat Dec 31 23:00:00 EST 1988

OSTI ID:6942597

Dahlgren, A; Driscoll, C T; McAvoy, D C

The present study was undertaken to verify some of the assumptions involved in the modeling of Al geochemistry in Spodosols of the northeastern USA. Specific objectives were to determine if there is a mineral phase in the Bs horizons which regulates Al(3+) activities, evaluate the rate at which precipitation and dissolution reactions occur with the controlling mineral phase (referred to as Al(OH)3 precipitation hereafter, since the specific reactions controlling Al(3+) activity in soil solutions are unknown), and provide process-level information for the development of simulation models that depict Al retention/release and the acidification of drainage waters. The Bs horizon was chosen because it is the soil horizon thought to most influence surface water chemistry in these shallow Spodosols.

• Research Organization: Syracuse Univ., NY (USA). Dept. of Civil Engineering
• OSTI ID: 6942597
• Report Number(s): PB-90-198656/XAB
• 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-)
ACIDIFICATION
ALUMINIUM
CHEMISTRY
COMPUTERIZED SIMULATION
DISSOLUTION
ELEMENTS
FEDERAL REGION I
FEDERAL REGION II
GEOCHEMISTRY
METALS
NORTH AMERICA
POLLUTION
PRECIPITATION
SEPARATION PROCESSES
SIMULATION
SOILS
SURFACE WATERS
USA
WATER CHEMISTRY
WATER POLLUTION
WATERSHEDS