Mathematics – Logic
Scientific paper
Feb 1989
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1989gecoa..53..237w&link_type=abstract
Geochimica et Cosmochimica Acta, vol. 53, Issue 2, pp.237-244
Mathematics
Logic
3
Scientific paper
The Raman spectra of the thio-antimony species present in alkaline Na 2 S solutions were obtained at 25°C. The Na 2 S concentration of the solutions was approximately 1.0 molal and the Sb concentrations ranged from 0.005 to 0.1 molal. The spectrum in 0.1 molal Sb solutions consists of a broad, weak band at 314 cm -1 , a more intense band at 369 cm -1 , a prominent shoulder at approximately 350 cm -1 and a suggestion of a shoulder near 380 cm -1 . All of these bands are polarized. An additional line is observed at 2574 cm -1 due to the H-S stretch of HS - . The observed Raman spectrum is consistent with either Sb 2 S 4 2- , or Sb 4 S 7 2- , but the former is preferred based on the small number of bands observed. The spectra of solutions at Sb concentrations of 0.06 or less consist of a polarized band at 369 cm -1 and a polarized shoulder at approximately 380 cm -1 . These spectra are consistent with either a bent SbS 2 - or a pyramidal SbS 3 3- species. The present data suggest that the thioantimony species present in most geological fluids, which are generally at higher temperatures, lower pH and contain lower Sb contents than those employed in this study, will be monomeric rather than polymeric. Most previous experimental reports of polymeric species, based solely on solubility or potentiometric studies, and any thermodynamic data derived from these studies, are suspect.
No associations
LandOfFree
Raman spectroscopic determination of the speciation of ore metals in hydrothermal solutions: I. Speciation of antimony in alkaline sulfide solutions at 25°C does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Raman spectroscopic determination of the speciation of ore metals in hydrothermal solutions: I. Speciation of antimony in alkaline sulfide solutions at 25°C, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Raman spectroscopic determination of the speciation of ore metals in hydrothermal solutions: I. Speciation of antimony in alkaline sulfide solutions at 25°C will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1884591