•For Total Hg stack concentrations > 0.5 µg/m3
•Standard dilution system
•Use Zero Air
•1 ng/m3 analyzer MDL
•40:1 system dilution - CEMS MDL ~ 0.04 µg/m3
•
•For Total Hg stack concentrations < 0.5 µg/m3
•Nitrogen dilution system
•Use Zero Air feed to Nitrogen generator
•0.2 ng/m3 analyzer MDL
•40:1 system dilution - CEMS MDL ~ 0.008 µg/m3
•
•