Refers to the sulfur content of sulfur in crude oil (sulphide or elemental sulfur) of the percentage.
含硫量是指原油中所含硫（硫化物或单质硫分）的百分数。
2
The removed sulphide almost was converted to element sulfur and the sulfate production was less than 10% by changing the oxygen concentration.
通过控制溶解氧的浓度，去除的硫化物几乎全部转化为单质硫，硫酸盐的生成率小于10%。
3
Iron-sulfur centers, which may consist of two or four iron atoms complexed with an equal number of sulphide ions, mediate 1-electron transfer reaction.