I am looking for some insight on Hydrogen Sulphide (H2S) and Sulphide (S2-), specifically in groundwater.
What exactly is the difference between the two? Is hydrogen sulfide simply just a form of sulphide? I am asking because in the provincial guidelines for groundwater (well water), there is an aesthetic objective of 0.05mg/L for sulphide (as H2S). However, some labs that do tests on groundwater report the concentrations simply as S2-. Can we compare this result directly to the 0.05 limit for H2S?
I would appreciate any help.