摘要
用ANDERSEN生物粒子采样器在北京西单和怀柔观测了大气细菌粒子浓度及浓度分布。结果表明,大气细菌粒子年平均浓度,西单为3103个/m^3,怀柔为623个/m^3。不同粒度的大气细菌粒子浓度在一天内西单有7:OO、19:00二个高峰时和13:00、夜间1:00二个低谷时;而怀柔有19:00～22:00一个高峰时和13:00一个低谷时。大气细菌粒子的浓度分布是从1～6级逐级减小。小于8.2μm的可吸入细菌粒子:西单为82.4％,怀柔为64.0％。
We observed the concentration and distribution of the air bacterium particles by using ANDER SON bioparticle sampler at Xidan and Huairou in Beijing. The results show the annual average concentration of the air bacterium particles is 3103/m3 in Xidan and 623/m3 in Huairou. The concentrations of the air bacterium particles of differental size have two highest points at seven o' clock and ninteen o' clock and two lowest points at thirteen o' clock and one o' clock in Xidan, and the highest point from seventeen to twenty- two o'clock and the lowest point at thirteen o'clock in Huairou. The concentration distribution of the air bacterium particles reduces gradually from one to six grade The inhalable bacterium particles smaller than 8.2um is 62.4% in Xidan and 64.0% in Huairou.
出处
《环境科学研究》
EI
CAS
CSCD
1992年第4期30-35,共6页
Research of Environmental Sciences
关键词
大气粒子
细菌
浓度分布
Air bacterium particle Concentration Concentration distribution
