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用ＡＮＤＥＲＳＥＮ生物粒子采样器在北京西单对大气细菌和真菌粒子的浓度、浓度分布、粒度分布及二者之间的关系进行了一年（１９８７－１１－０３～１９８８－０８－０１）的观测和研究。结果表明，西单大气细菌粒子年平均浓度为大气真菌粒子年平均浓度的２．６倍，一年中大气细菌粒子浓度与大气真菌粒子浓度的相关系数为０．３２９，呈正相关关系。大气细菌粒子的浓度和粒度均为正偏态分布，大气真菌粒子的浓度和粒度均为对数正态分布，＞８．２μｍ的粗粒浓度，大气细菌为１６３３个／ｍ３，大气真菌为１７９个／ｍ３，大气细菌为大气真菌的９．１倍。大气细菌粒子的四季浓度均大于大气真菌粒子的四季浓度，不同季节的大气细菌和真菌粒子浓度的相关系数为０．９５６，呈明显的正相关关系。一天内，大气细菌粒子浓度呈双峰变化，大气真菌粒子浓度呈单峰变化，一天中的大气细菌和真菌粒子浓度的相关系数为０．０１５，相关关系不明显。
One year (1987-11-03 ~ 1988-08-01) was conducted with ANDERSEN bio-particle sampler to investigate the relationship between the concentration, concentration distribution, particle size distribution of atmospheric bacteria and fungal particles and the relationship between them in Xidan, Beijing the study. The results showed that the average annual concentration of bacteria in Xidan was 2.6 times of that of atmospheric fungi. The correlation coefficient between the concentration of atmospheric bacteria and the concentration of atmospheric fungi in one year was 0.329, which showed a positive correlation. The concentration and particle size of atmospheric bacteria particles were positive skewed distribution. The concentration and particle size of atmospheric fungi particles were both logarithmic normal distribution, the concentration of coarse particles> 8.2μm, the atmospheric bacteria was 1633 / m3, the atmospheric fungi was 179 A / m3, atmospheric bacteria 9.1 times the atmospheric fungus. The four season concentrations of atmospheric bacteria particles were greater than those of atmospheric fungi particles. The correlation coefficient of atmospheric bacteria and fungal particle concentrations in different seasons was 0.956, showing a significant positive correlation. In one day, the atmospheric bacterial particle concentration showed a bimodal variation, and the atmospheric fungal particle concentration showed a single peak change. The correlation coefficient between atmospheric bacteria and fungal particle concentration in one day was 0.015, and the correlation was not significant.