摘要
本文报告了京津地区9个地点1年中大气细菌和真菌浓度采样测定的结果。各地大气细菌浓度变化范围较大,1年中空气菌体浓度以春季和夏季末秋初较高,1天内以6～7时和17～19时较高。某些气象因素对大气菌体浓变有重要影响。太阳辐射、雨和雪能降低空气中的菌数,但大风能促进细菌空气污染。
The concentrations of airborne bacteria and fungi were monitored during a period of one year at nine districts over Beijing and Tianjin area. The annual average concentrations of different dist- rics presented variance greattly.Generally,the bac- terial concentration varied greattly in an annual pe- riodicity which appeared high average counts during summer-autumn and spring,and daily periodicity appear ed high average counts during 6～7 and 17～ 19 o’clock.The conspicuous influences of certain meteorological factors on the numbers of airborne bacteria and fungi were also found:sorar radiation, rain and snow cause a decrease in the microbial p- articles.High wind velocities increase the counst.
