Measurement of SO2 in air using coated piezoelectric crystal detectors.
Use of hydrophobic membrane filters is shown to effectively reduce the interfering moisture level in the detection of SO2 in air at the parts per billion range. Quadrol is used as a sensitive coating on piezoelectric crystal detectors in a flow system.
D000393:Air Pollutants / Q000032:analysis*; D003461:Crystallography; D005029:Ethylenediamines; D005374:Filtration; D007202:Indicators and Reagents; D008722:Methods; D011791:Quartz; D013458:Sulfur Dioxide / Q000032:analysis*
D000393:Air Pollutants; D005029:Ethylenediamines; D007202:Indicators and Reagents; D013458:Sulfur Dioxide; C010629:1,1',1'',1'''-(ethylenedinitrilo)tetra-2-propanol; D011791:Quartz