Spectrophotometric in-line monitoring of the electrochemical production of polysulfides using an ATR-probe
1998 (English)In: Process control and quality, ISSN 0924-3089, E-ISSN 1568-5667, Vol. 11, no 2, 153-159 p.Article in journal (Refereed) Published
With an ATR-probe For the UV-vis range it is possible to apply spectrophotometry to very concentrated process liquors without dilution. In this paper the application of a new ATR-probe to the monitoring of sulfur species during an electrochemical process for production of polysulfides is presented. In this system, the temperature and the total salt concentration are relatively constant. A linear relation exists between the ATR-probe response and the concentration of adsorbing species. Therefore, the process can be followed by simple monitoring of a few wavelengths. The ATR-probe was easily implemented and showed no signs of deterioration in the hot strongly alkaline medium. Temperature has a significant effect on measurement with ATR-probes. Other factors that might also affect the measurements using an ATR-probe an briefly discussed.
Place, publisher, year, edition, pages
1998. Vol. 11, no 2, 153-159 p.
sulfide, polysulfide excess sulfur, ATR-probe, UV-vis, in-line, process monitoring, electrochemical oxidation, SODIUM-HYDROXIDE, LIQUOR, CELL
IdentifiersURN: urn:nbn:se:kth:diva-12873ISI: 000076338000007OAI: oai:DiVA.org:kth-12873DiVA: diva2:319495
QC 201005182010-05-182010-05-182010-05-18Bibliographically approved