Determination of sulfur anions in spent oil shale leachates by ion chromatography
The leaching and transport of chemical constituents from spent oil shale disposal areas is an area of environmental concern at the present time. Sulfur-containing compounds are prevalent in spent oil shales and have the potential to leach into aqueous systems surrounding disposal sites. Computer modeling has been used in recent years to predict the transport of species in an aqueous environment. The quality of model predictions, however, depends on the validation steps taken in comparing model predictions with laboratory data on ion speciation. Further, the quality of the validation step depends on the reliability of laboratory methods in generating ion speciation data. The purpose of this study was to develop methods to separate and quantify sulfur-containing anions in spent oil shale leachates by suppressed ion chromatography. The anions studied were S{sup 2{minus}} (sulfide), SO{sup 2{minus}}{sub 3} (sulfite), SO{sup 2{minus}}{sub 4} (sulfate), SCN{sup {minus}} (thiocyanate), S{sub 2}O{sup 2{minus}}{sub 3} (thiosulfate), and S{sub 4}O{sup 2{minus}}{sub 6} (tetrathionate). After the separations were developed, a series of method-challenging experiments were performed to test the reliability of the methods and assure the development of an analytically sound product. 24 refs., 7 figs., 5 tabs.
- Research Organization:
- Western Research Inst., Laramie, WY (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (USA)
- DOE Contract Number:
- FC21-86MC11076
- OSTI ID:
- 5964546
- Report Number(s):
- DOE/MC/11076-2956; ON: DE91002034
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
LEACHATES
CHEMICAL ANALYSIS
SPENT SHALES
LEACHING
SULFATES
QUANTITATIVE CHEMICAL ANALYSIS
SULFIDES
SULFITES
THIOCYANATES
THIONATES
THIOSULFATES
ACCURACY
CALIBRATION
DATA COMPILATION
ENVIRONMENTAL TRANSPORT
ION EXCHANGE CHROMATOGRAPHY
MEASURING METHODS
OIL SHALES
OPERATION
OPTIMIZATION
RELIABILITY
SEPARATION PROCESSES
ANTITHYROID DRUGS
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CARBONIC ACID DERIVATIVES
CHALCOGENIDES
CHROMATOGRAPHY
DATA
DISPERSIONS
DISSOLUTION
DRUGS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HORMONE ANTAGONISTS
INFORMATION
MASS TRANSFER
MATERIALS
MIXTURES
ORGANIC COMPOUNDS
ORGANIC SULFUR COMPOUNDS
OXYGEN COMPOUNDS
SOLUTIONS
SULFUR COMPOUNDS
041000* - Oil Shales & Tar Sands- Environmental Aspects
040500 - Oil Shales & Tar Sands- Properties & Composition