Spatial distribution of iron and sulphur species on the surface of pyrite
作者： Ph. de Donato , C. Mustin , R. Benoit , R. Erre
DOI: 10.1016/0169-4332(93)90217-Y
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摘要: Abstract XPS, DRIFTS, UV spectroscopy and HPLC were used to investigate the nature spatial distribution of oxidized superficial phases present on pyrite surfaces. Two pure pyrites with different arsenic contents used. The surface first sample (As=0.018%) is covered an important three-dimensional heterogeneous phase (Fe2(SO4)3, Fe(OH)3, FeO) in equilibrium two two-dimensional (metastable polysulphide (S5S2-) elemental sulphur (S8)). at second (As=0.309%) have same composition. However, their extension mainly lower amounts sulphur.
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