Sulfur forms in heavy petroleum and coal

Direct Determination and Quantification of Sulfur Forms in Heavy Petroleum and Coal... 

Goibaty ML, George GN, Kelemen SR (1990) Direct determination and quantification of sulfur forms in heavy petroleum and coals 2. The sulfur edge X-ray absorption spectroscopy approach. Fuel 69 945-950... 

A Sulfur K Edge X-ray Absorption Near Edge Structure (XANES) Spectroscopy method has been developed for the direct determination and quantification of the forms of organically bound sulfur in nonvolatile petroleum and coal samples. XANES spectra were taken of a number of model compounds, mixtures of model compounds, heavy petroleum and coal samples. Analysis of the third derivatives of these spectra allowed approximate quantification of the sulfidic and thiophenic components of the model mixtures and of heavy petroleum and coal samples. These results are compared with those obtained by X-ray Photoelectron Spectroscopy (XPS). 

---