2.3. PM2.5 sampling of incense burning The conditioned and weighed quartz filters (Pall Tissuquartz™ filters, 2500 QAT-UP, 37 mm) were placed on a PM2.5 Personal
2.3. PM2.5 sampling of incense burningThe conditioned and weighed quartz filters (Pall Tissuquartz™filters, 2500 QAT-UP, 37 mm) were placed on a PM2.5 Personal