摘要
本文用仿制美国的ANDERSEN生物粒子采样器测定了北京两单、丰台和天津塘沽海滨三个地点的大气细菌和真菌浓度,结果表明,年平均空气细菌浓度北京西单为3.02个/L、丰台为2.56个/L、天津塘沽海演为1.38个/L,丰台真菌为1.20个/L,在一天内,大气细菌浓度分布明显出现7点、22点二个高峰时和13点、夜间1点二个低峰时,由ANDERSEN采样分为六级的大气细菌浓度亦有同样的目变化规律。
Concentrations of airbone bacterial and fungous par-ticales in three sites in the Beijing and Tianjin areas were determined by a six-stage Andersen sampler modelled in our laboratory. Results showed that the average concentrations of bacteria in air were 3-02 CFU/L a year for Xidan, Beijing, 2.56 CFU/L for Fengtai Beijing, and 1.38 CFU/L for the seaside in Tanggu, Tianjin, and that the average concentration of fungi in air of Fengtai was 1.20 CFU/L a year. With respect to the temporal distribution of concentration of bacteria in air, there were two peaks, at 7:00 a. m. and 10:00 p. m., and two valleys, at 1:00 p. m. and 1:00 a. m.. There had been similar pattern for the concentrations of bacteria which were collected on each stages inside the Andersen sampler.
出处
《环境科学》
EI
CAS
CSSCI
CSCD
北大核心
1989年第5期30-35,共6页
Environmental Science
