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青岛市不同空气质量下可培养生物气溶胶分布特征及影响因素

韩晨 谢绵测 祁建华 张文倩 李先国 张大海

韩晨, 谢绵测, 祁建华, 张文倩, 李先国, 张大海. 青岛市不同空气质量下可培养生物气溶胶分布特征及影响因素[J]. 环境科学研究, 2016, 29(9): 1264-1271.
引用本文: 韩晨, 谢绵测, 祁建华, 张文倩, 李先国, 张大海. 青岛市不同空气质量下可培养生物气溶胶分布特征及影响因素[J]. 环境科学研究, 2016, 29(9): 1264-1271.
HAN Chen, XIE Miance, QI Jianhua, ZHANG Wenqian, LI Xianguo, ZHANG Dahai. Size Distribution Characteristics of Culturable Bioaerosols in Relation to Air Quality Levels in Qingdao[J]. Research of Environmental Sciences, 2016, 29(9): 1264-1271.
Citation: HAN Chen, XIE Miance, QI Jianhua, ZHANG Wenqian, LI Xianguo, ZHANG Dahai. Size Distribution Characteristics of Culturable Bioaerosols in Relation to Air Quality Levels in Qingdao[J]. Research of Environmental Sciences, 2016, 29(9): 1264-1271.

青岛市不同空气质量下可培养生物气溶胶分布特征及影响因素

基金项目: 国家自然科学基金项目(41375143);留学回国人员科研启动基金资助项目[教外司(2013)693号]

Size Distribution Characteristics of Culturable Bioaerosols in Relation to Air Quality Levels in Qingdao

  • 摘要: 利用Andersen空气微生物采样器采集青岛市不同空气质量下的可培养生物气溶胶,分析了其浓度和粒径分布特征,并利用Spearman’s相关性分析了可培养生物气溶胶浓度和空气质量指数中的颗粒物质量浓度〔ρ(PM10)、ρ(PM2.5)〕、气体污染物质量浓度〔ρ(O3)、ρ(SO2)、ρ(NO2)〕和气象参数(温度、相对湿度、风速)之间的关系.结果表明:可培养真菌和细菌气溶胶浓度范围分别为133~1 113和13~212 CFU/m3.真菌气溶胶浓度与ρ(SO2)、ρ(PM10)、ρ(PM2.5)均呈正相关,而与相对湿度呈显著负相关(P<0.05).细菌气溶胶浓度与ρ(NO2)、ρ(SO2)呈负相关,而与ρ(O3)、温度呈正相关.风速对可培养生物气溶胶浓度的影响较小.以AQI(空气质量指数)中ρ(PM10)为依据,将研究时间段空气质量划分为4个空气污染等级.在不同污染等级下,真菌气溶胶均呈对数正态分布,粒径主要分布于2.1~4.7 μm.低污染时细菌气溶胶呈偏态分布(粒径>4.7 μm),高污染时粒径分布发生改变.初步推断,随着空气污染等级的升高,可培养生物(真菌+细菌)气溶胶总浓度增加,但单位颗粒物上的浓度变化较稳定.ρ(PM10)是影响可培养生物气溶胶浓度及粒径分布的主要因素.

     

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出版历程
  • 收稿日期:  2015-10-10
  • 修回日期:  2016-06-13
  • 刊出日期:  2016-09-25

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