Electroanalytical chemistry of sulfur compounds for the new coal conversion technologies
- Pennsylvania State Univ., University Park (USA)
- Med-Chek Labs., Pittsburgh, PA (USA)
- Union Camp Corp., Princeton, NJ (USA)
Polarographic methods are described tailor-made for the speciation and determination of sulfur contaminants in synfuels and coal gasification/liquefaction process streams. In samples containing the anions, S{sub x}{sup 2{minus}}, sulfidic sulfur was quantitated by anodic depolarization of the dropping mercury electrode, while polysulfidic sulfur was determined with the aid of an electroreduction process implicating 2(x-1) electrons. Polythionates were electroreduced to thiosulfate, sulfite, sulfide and/or mixtures thereof, under judiciously controlled experimental conditions. Thiosulfate and sulfite were quantitated by differential pulse polarography at dropping mercury anodes via reactions involving formation of thiosulfato- and sulfitomercurates. 14 refs., 2 figs.
- DOE Contract Number:
- AC22-77ET10482
- OSTI ID:
- 5170387
- Journal Information:
- Analytical Letters; (USA), Vol. 22:6; ISSN 0003-2719
- Country of Publication:
- United States
- Language:
- English
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