期刊
ATMOSPHERIC ENVIRONMENT
卷 128, 期 -, 页码 10-19出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.atmosenv.2015.12.008
关键词
Haze level; Meteorological parameters; Air pollutants; Culturable bioaerosols; Beijing
资金
- National Natural Science Foundation of China [51308047]
- Beijing Nova Program [Z151100000315058]
- Basic Research Program of State Key Laboratory of NBC Protection for Civilian [SKLNBC2015-11]
- Special Program for Creative Ability of Beijing Academy of Agriculture and Forestry Sciences [KJCX 2014302]
Bioaerosols, including their characteristics and overall changes correlated with environmental factors, have the potential to impact human health and influence atmospheric dynamics. In this study, the varying interrelationship between the concentration and diameter of culturable bioaerosols and twelve factors including PM2.5 (AQI), PM10 (AQI), sampling time, sampling season, temperature, relative humidity, dew, pressure, wind, O-3, NO2, and SO2 is determined for twelve months during non-haze and haze days in Beijing. Results of principal component analysis (PCA) indicated that the influence of factors on culturable bioaerosols is mainly associated with haze levels, sampling time, and season. Multiple linear regressions showed that the correlation between PM10 (AQI) or temperature and culturable bioaerosols varied at different haze levels. The seasonal influence of PM2.5 (AQI) was observed in culturable bioaerosol concentrations, but not their diameters. A temporal relationship between PM10 (AQI) and culturable bioaerosol concentration was detected during rush hour. SO2 and NO2 show positive and negative correlations with culturable bioaerosol concentrations in the morning/evening and mid-day, respectively. These results are useful for accurately evaluating the health effects of exposure to bioaerosols. (C) 2015 Elsevier Ltd. All rights reserved.
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