Application of Temperature Programmed Oxidation-Infrared Technique in the Analysis of Sulfur Occurrence and Genesis in Phosphate Rock

Table 4

The XPS S 2p analysis of phosphate rocks.

Peak	Assignment	Position/eV	Fwhm/eV	Content (mol.%)
				KYP	WAP	ZJP
1	Pyrite	172.3	1.9	1.94	32.43	0
2	Sulfate	168.9	1.9	70.92	35.26	51.24
3	Sulfite	167.4	1.9	17.18	23.33	24.38
4	Sulfoxide	166.4	1.9	0	2.73	11.47
5	Thiophene	164.3	1.9	4.81	6.25	9.09
6	Sulfide	161.5	1.9	5.15	0	3.82