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- Title
Spring and conduit sediments as storage reservoirs for heavy metals in karst aquifers.
- Authors
Vesper, D.J.; White, W.B.
- Abstract
Sediment samples were collected from six springs draining the karst aquifer at Fort Campbell, Kentucky/Tennessee. These were analyzed by ICP-MS following an extraction procedure that separates the metals into exchangeable, carbonate, oxide, organic and residual fractions. Aluminum and iron are primarily present in the residual fraction while manganese may be dominantly in either the oxide or carbonate fraction. The redox-sensitive metals (Fe and Mn) have the greatest fractional distribution in the spring with the thickest sediments. Trace metals detected include Cr, Cd, Ni, Pb, and Zn in the range of a few to 200 mg/kg. In Beaver Spring, nickel is distributed between the exchangeable, carbonate and organic fractions, while in Gordon Spring, nickel is largely residual. Chromium is almost entirely associated with the organic fraction in Beaver Spring while it is largely residual in Gordon Spring.
- Subjects
KENTUCKY; KARST; LANDFORMS; AQUIFERS; HYDROGEOLOGY; RESERVOIRS; HEAVY metals; FORT Campbell (Ky. &; Tenn.)
- Publication
Environmental Geology, 2004, Vol 45, Issue 4, p481
- ISSN
0943-0105
- Publication type
Article
- DOI
10.1007/s00254-003-0899-6