Instrumental methods of analysis of sulfur compounds in synfuel process streams. Quarterly technical progress report, January-March 1983. [Thermometric titration of polysulfides with p-hydroxymercuribenzoate; polarography of tetrathionate and pentathionate]
Task 1. Methods development for the speciation of the polysulfides. The chemistry of polysulfides is reviewed in the context of coal-liquefaction condensates. Rearrangements of polysulfides (condensation to longer chain lengths, cleavage and disproportionation) are accounted for by the bifunctional nature of polysulfides as Lewis acids and bases. Classical analytical methods are also reviewed. Task 2. Methods development for the speciation of dithionite and polythionates. A polarographic procedure has been developed for the determination of tetrathionate and pentathionate in the presence of each other. The method is based on measuring diffusion currents (at the dropping mercury electrode) at two discrete potentials. Task 3. Total accounting of the sulfur balance in representative samples of synfuel process streams. Preliminary data are reported on the analysis of two new samples, viz., a gasifier condensate (G-1) and a three year old SRC-II aqueous effluent (L-1). No sulfide or polysulfides were found in either sample. Thiosulfate was detected in L-1. 9 figures, 5 tables.
- Research Organization:
- Pennsylvania State Univ., University Park (USA). Dept. of Chemistry
- DOE Contract Number:
- FG22-81PC40783
- OSTI ID:
- 6255272
- Report Number(s):
- DOE/PC/40783-T10; ON: DE83012190
- Country of Publication:
- United States
- Language:
- English
Similar Records
Instrumental methods of analysis of sulfur compounds in synfuel process streams. Quarterly technical progress report for April-June 1984. [Sulfidic, polysulfidic, thiosulfate, sulfite, sulfate, thiocyanate]
Instrumental methods of analysis of sulfur compounds in synfuel process streams. Quarterly technical progress report, January-March 1984
Related Subjects
010405 -- Coal
Lignite
& Peat-- Hydrogenation & Liquefaction
010600* -- Coal
Lignite
& Peat-- Properties & Composition
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
CHALCOGENIDES
CHEMICAL ANALYSIS
COAL LIQUEFACTION
DATA
DISPERSIONS
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
LIQUEFACTION
MIXTURES
NONMETALS
NUMERICAL DATA
POLAROGRAPHY
PROCESS SOLUTIONS
QUANTITATIVE CHEMICAL ANALYSIS
RESEARCH PROGRAMS
SOLUTIONS
SRC-II PROCESS
SULFIDES
SULFUR
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
TITRATION