Monitoring of Concentration of Airborne Pollen with Burkard Sampler in Autumn,2007 in Beijing

Objective The aim of this study was to understand the pollen concentration and the daily variation during 2007 in Beijing by monitoring.Methods Burkard volumetric strap was used for the pollen sampling from August 1st to October 20th.Genus of pollen was identified by light microscope.Results Artemisia and Humulus.L pollen were the dominant airborne pollen in late summer and autumn in Beijing City.The average pollen concentration of Artemisia and Humulus.L were 71 grain/m3, 124 grain/m3.Both of them lasted from the August 8th until October 6th or 8th.Statistical analysis showed that the pollen concentration of Artemisia or Humulus.L at 2:00 pm to 4:00 pm was higher than that at 6:00 am to 8:00 am.Conclusion It is the first work to conduct the monitoring of the concentration of Artemisia and Humulus.L pollen with Burkard sampler in Beijing.Humulus.L is the dominant airborne pollen during August and September.