Main Title |
Arsenic Sedimentation Along the Slope of a Lake Basin. |
Author |
Siami, M. ;
McNabb, C. D. ;
Batterson, T. R. ;
Glandon, R. P. ;
|
CORP Author |
Michigan State Univ., East Lansing. Dept. of Fisheries and Wildlife.;Corvallis Environmental Research Lab., OR. |
Publisher |
c1987 |
Year Published |
1987 |
Report Number |
EPA/600/J-87/546; |
Stock Number |
PB91-171413 |
Additional Subjects |
Arsenic ;
Lake Lansing(Michigan) ;
Sedimentation ;
Water pollution ;
Mathematical models ;
Littoral zone ;
Sodium arsenite ;
Surface waters ;
Reprints ;
|
Holdings |
Library |
Call Number |
Additional Info |
Location |
Last Modified |
Checkout Status |
NTIS |
PB91-171413 |
Some EPA libraries have a fiche copy filed under the call number shown. |
|
07/26/2022 |
|
Collation |
13p |
Abstract |
Lake Lansing, Michigan was treated with sodium arsenite for macrophyte control in 1957. Seven 1.5-m sediment cores were taken along a line through the littoral zone to the deepest portion of the lake and analyed for arsenic. In each core, arsenic concentrations going from the surface downward increased to some maximum and then receded to background. Depth of peak concentrations followed two patterns; three littoral cores showed peak arsenic at 0.13 m from the sediment surface, and four cores from progressively deeper portions of the lake showed a regular decrease in peak depth from 0.32 m to 0.17 m. Sediment accumulation rates were calculated along this transect. Particle-size sorting of sediments along this slope was also measured. This work suggested that sediments originated from wetland vegetation at the edge of the lake. Turbulent movement of water in the shallows caused suspension and down-slope movement of small particles. Fewer particles of wetland origin were available for sedimentation beyond the region of highest fallout (3.75 m), thus accounting for progressively lower sedimentation rates in deeper portions of the basin. A model was developed to predict the time it would take for surface sediments to reach pretreatment concentrations of arsenic levels; for Lake Lansing it would be more than 100 years. (Copyright (c) SETAC 1987.) |
Supplementary Notes |
Pub. in Environmental Toxicology and Chemistry, v6 p595-605 1987. Sponsored by Corvallis Environmental Research Lab., OR. |
NTIS Title Notes |
Journal article. |
Title Annotations |
Reprint: Arsenic Sedimentation Along the Slope of a Lake Basin. |
Category Codes |
68D; 57H; 48G |
NTIS Prices |
PC A03/MF A01 |
Primary Description |
600/02 |
Document Type |
NT |
Cataloging Source |
NTIS/MT |
Control Number |
114324605 |
Origin |
NTIS |
Type |
CAT |