Quantitative determination of elemental sulfur at the arsenopyrite surface after oxidation by ferric iron: mechanistic implications

Table 1 Experimental parameters

Sample number	Acid and total volume	Oxidant	Mineral material/g	Length of reaction/d
PC1	Perchloric, 75 mL	310 ppmFe³⁺	0.324	4
PC2	Perchloric, 75 mL	310 ppmFe³⁺	0.326	4
PC3	Perchloric, 75 mL	310 ppmFe³⁺	0.328	4
PC4	Perchloric, 75 mL	310 ppmFe³⁺	0.348	4
PC5	Perchloric, 75 mL	310 ppmFe³⁺	0.346	4
PC6	Perchloric, 75 mL	310 ppmFe³⁺	0.345	4
S1	Sulfuric, 100 mL	130 ppmFe³⁺	0.328	6
S2	Sulfuric, 100 mL	250 ppmFe³⁺	0.331	6
S3	Sulfuric, 100 mL	510 ppmFe³⁺	0.329	6

ISSN: 1467-4866