Distribution and mobilization of arsenic and antimony species in the Coeur d'Alene River, Idaho

Sediments from the Main Stem and the South Fork of the Coeur d'Alene River are contaminated with As, Sb, and other heavy metals from the local mining operations. Water samples from the South Fork and the Main Stem showed high levels of As (0.11-1.64 {mu}g/L) and Sb (0.23-8.25 {mu}g/L) relative...

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Bibliographic Details
Published in:Environmental science & technology 1990-01, Vol.24 (1), p.102-108
Main Authors: Mok, Wai Man, Wai, Chien M
Format: Article
Language:English
Subjects:
540320 - Environment, Aquatic- Chemicals Monitoring & Transport- (1990-)
ANTIMONY
Applied sciences
ARSENIC
CHALCOGENIDES
CHEMICAL ANALYSIS
Continental surface waters
DISSOLUTION
DISTRIBUTION
ELEMENTS
ENVIRONMENTAL SCIENCES
Exact sciences and technology
IRON COMPOUNDS
IRON OXIDES
LEACHING
MANGANESE COMPOUNDS
MANGANESE OXIDES
METALS
MINING
Natural water pollution
OXIDES
OXYGEN COMPOUNDS
PH VALUE
POLLUTION
QUANTITATIVE CHEMICAL ANALYSIS
SEDIMENTS
SEMIMETALS
SEPARATION PROCESSES
TRANSITION ELEMENT COMPOUNDS
WATER POLLUTION
Water treatment and pollution
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Summary:Sediments from the Main Stem and the South Fork of the Coeur d'Alene River are contaminated with As, Sb, and other heavy metals from the local mining operations. Water samples from the South Fork and the Main Stem showed high levels of As (0.11-1.64 {mu}g/L) and Sb (0.23-8.25 {mu}g/L) relative to those from the North Fork (0.26 {mu}g/O As and 0.17 {mu}g/L Sb). Arsenic (III) was found to be the predominant form in the waters of the South Fork and Main Stem of the Coeur d'Alene River, whereas the North Fork generally had higher As(V) concentrations. The major inorganic Sb species was Sb(V) in all three branches of the river. Leaching of As and Sb species from the contaminated Main Stem sediments depends on the pH values of the water as well as on the free iron oxides and manganese oxides present in the sediments. Factors controlling the distribution and mobilization of As and Sb species in this aquatic environments are discussed.
ISSN:0013-936X
1520-5851
DOI:10.1021/es00071a012