Hydrogen Sulfide
•Generation depends on pH, organic matter, dissolved oxygen, and temperature
•Detected at 0.5 ppb
•Drywall composed of paper backing and gypsum (CaSO4 2H2O)
•Sulfate in solution and reducing conditions creates hydrogen sulfide
SO42- + organic
compounds S2- + H2O + CO2
S2- + 2H+ H2S