Extraction and speciation of arsenic in lacustrine sediments
Talanta
By: W. H. Ficklin
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Abstract
Arsenic was partially extracted with 4.OM hydrochloric acid, from samples collected at 25-cm intervals in a 350-cm column of sediment at Milltown Reservoir, Montana and from a 60-cm core of sediment collected at the Cheyenne River Embayment of Lake Oahe, South Dakota. The sediment in both reservoirs is highly contaminated with arsenic. The extracted arsenic was separated into As(III) and As(V) on acetate form Dowex 1-X8 ion-exchange resin with 0.12M HCl eluent. Residual arsenic was sequentially extracted with KClO3 and HCl. Arsenic was determined by graphite-furnace atomic-absorption spectrometry. The analytical results define oxidized and reduced zones in the sediment columns.
Study Area
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Extraction and speciation of arsenic in lacustrine sediments |
| Series title | Talanta |
| DOI | 10.1016/0039-9140(90)80127-2 |
| Volume | 37 |
| Issue | 8 |
| Year Published | 1990 |
| Language | English |
| Publisher | Elsevier |
| Description | 4 p. |
| First page | 831 |
| Last page | 834 |
| Country | United States |
| State | Montana, South Dakota |