Particulate matter in the sampled gas is removed with a silica-fiber filter maintained 10-20‘c above the stack gas temperature and placed behind the probe. Sulfuric acid and sulfur dioxide are then collected from the gaseous sample.
Particulate matter in the sampled gas is removed with a silica-fiber filter maintained 10-20‘c above the stack gas temperature and placed behind the probe. Sulfuric acid and sulfur dioxide are then collected from the gaseous sample.