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Application of oxidation-reduction potential and pH to investigate a ferric oxide waste disposal pond and a lead processing waste site.

Authors
May-A; Peterson-JB
Source
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, RI 9514, 1994 Jan; :1-17
Link
NIOSHTIC No.
10012433
Abstract
The U.S. Bureau of Mines investigated the application of oxidation-reduction-potential (ORP) and pH measurements for environmental studies of mining/mineral processing wastes, and a computer program has been developed to estimate the concentrations of species of lead present in samples from a lead processing waste site. The ORP-pH values can help identify valence values and species of ions present, including those of major, minor, and trace concentrations and also indicate possible reactions at various pH values. The ORP measurements versus temperature yield data from which thermodynamic values can be calculated. The application and limitations of these measurements are discussed and a brief discussion of the computational program to identify species of lead is presented.
Keywords
Iron-oxides; Lead-metal; Concentration-composition; pH; Thermodynamics; Computer-software; Mining-industry; Test-methods; Chemical-analysis; Pollution-monitoring; Oxidation-reduction-reactions; Waste-disposal; Waste-processing
Publication Date
19940101
Document Type
Report of Investigations
Fiscal Year
1994
NTIS Accession No.
PB95-136677
NTIS Price
A03
Identifying No.
RI-9514
NIOSH Division
TURC
SIC Code
ST
Source Name
Tuscaloosa, AL: U.S. Department of the Interior, Bureau of Mines, RI 9514
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