Preferred term

sulfide

Is replaced by

Sulfide is an inorganic anion with the chemical formula S2−. It contributes no color to sulfide salts. Sulfide is the main component of niningerite (niningerite is roughly 47% sulfide by mass), and contributes no odor to sulfide salts. As it is classified as a strong base, even dilute non-aqueous sulfide solutions are corrosive and attacks the skin. Sulfide is the simplest unary sulfur anion.

http://vocabs.lter-europe.net/EnvThes/USLterCV_568