Some papers mention S 2p when they really mean S 2p3/2, these are not interchangeable! Please remember to be specific about the exact peak you are referring to. The sulfur coverage after individual exposures was then obtained by com-paring the 2p XPS intensities against the satura-tion curve. 2) LEED pattern visible slightly before and at the saturation coverage.There is a lot of confusion in the literature when presenting the data for sulphur. The saturation coverage of sulfur at 200K was determined to 0.25ML 2 using the saturation of the S2p XPS line combined with a clear p(2 Ī Na2S2O3.5H2O (sodium thiosulphite cooled to -130C during analysis) reference sample gave S 2p3/2 peak positions of 162.1 eV and 168.1 eV for S*SO3 and SS*O3 moieties, respectively. This work shows that sulfide coordination changes can be seen by XPS. In a recent paper from Sarah Harmer's group at Flinders University, synchrotron XPS is used to convincingly elucidate surface 3-coordinate, bulk and surface 4-coordinate and bulk 5-coordinate sulfur in the chalcogenide (Fe,Ni)9S8. A more detailed look at organic sulphur species can be found here. give a value of 162.2 eV for the disulphide in arsenopyrite. Notes: 2p3/2 - 2p1/2 doublet separation 1.18eV, peaks constrained to a. Surface species can also play a role in XPS, especially for in-situ fractured sulphide mineral species. S 2p3/2 binding energies compiled from the NIST database 1 and other sources. Of particular interest is the assignment for polysulphides eg. These ranges can be used with other sulphur containing systems as well. give an excellent overview of binding energy ranges for the study of mineral surfaces.

Xps peak pure sulphur s2p