您好，欢迎访问北京市农林科学院 机构知识库！
北京市农林科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Seasonal size distribution of airborne culturable bacteria and fungi and preliminary estimation of their deposition in human lungs during non-haze and haze days

文献类型： 外文期刊

作者： Gao, Min 1 ; Jia, Ruizhi 1 ; Qiu, Tianlei 1 ; Han, Meilin 1 ; Song, Yuan 2 ; Wang, Xuming 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Beijing Agrobiotechnol Res Ctr, Beijing 100097, Peoples R China

2.China Agr Univ, Coll Biol Sci, Beijing 100193, Peoples R China

3.Beijing Acad Agr & Forestry Sci, Beijing Key Lab Agr Genet Resources & Biotechnol, Beijing 100097, Peoples R China

4.State Key Lab NBC Protect Civilian, Beijing 102205, Peoples R China

关键词： Haze;Culturable bioaerosols;Concentration;Size distribution;Lung deposition;Beijing

期刊名称：ATMOSPHERIC ENVIRONMENT （ 影响因子：4.798； 五年影响因子：5.295 ）

ISSN： 1352-2310

年卷期： 2015 年 118 卷

页码：

收录情况： SCI

摘要： In recent years, haze events in Beijing have significantly increased in frequency. On haze days, airborne microorganisms are considered to be a potential risk factor for various health concerns. However, limited information on bioaerosols has prevented our proper understanding of the possible threat to human health due to these bioaerosols. In this study, we used a six-stage impactor for sampling culturable bioaerosols and the LUDEP 2.07 computer-based model for calculating their deposition on human lungs to investigate seasonal concentration, size distribution, and corresponding deposition efficiency and flux in the human respiratory tract during different haze-level events. The current results of the analysis of 398 samples over four seasons indicate that the concentration of culturable airborne bacteria decreased with increasing haze severity. The bioaerosol concentration ratio was skewed towards larger particle sizes on heavy haze days leading to larger bioaerosol aerodynamic diameters than on non-haze days. During nasal breathing by an adult male engaged in light exercise in an outdoor environment, the total deposition efficiency of culturable bioaerosols is 80-90% including approximately 70% in the upper respiratory tract, 5-7% in the alveoli, and about 3% in the bronchial couple with bronchiolar regions. Although the difference in culturable bioaerosol aerodynamic diameters at different haze levels was not large enough to cause obvious differences in lung deposition efficiency, the deposition fluxes clearly varied with the degree of haze owing to the varied concentration of culturable airborne bacteria and fungi. The results here could improve our understanding of the seasonal health threat due to culturable bioaerosols during non-haze and haze days. (C) 2015 Elsevier Ltd. All rights reserved.

  • 相关文献

[1]Variation of correlations between factors and culturable airborne bacteria and fungi. Gao, Min,Qiu, Tianlei,Han, Meilin,Wang, Xuming,Yan, Xu,Gao, Min.

[2]Size-related bacterial diversity and tetracycline resistance gene abundance in the air of concentrated poultry feeding operations. Gao, Min,Jia, Ruizhi,Qiu, Tianlei,Han, Meilin,Wang, Xuming.

[3]Looking Forward to Beijing Agricultural Informationization in the 13th five years plan. Qing-feng WEI,Yan TANG,Chang-shou LUO. 2016

[4]Strategy for renewable energy development in rural areas of Beijing. Zhou, Zhongren,Zhou, Liandi. 2013

[5]Distribution characteristics and law of negative air ions in typical garden flora areas of Beijing. Li, Shaoning,Lu, Shaowei,Pan, Qinghua,Zhang, Yuping,Chen, Bo,Yang, Xinbing. 2013

[6]Beijing Agricultural Scientific Technical Information Counseling Service Status and Countermeasure on the New Situations. Luo, C. S.,Wei, Q. F.,Li, Z. M.,Cao, C. Z.,Zheng, Y. M.,Guo, Q.,Luo, C. S.,Wei, Q. F.,Li, Z. M.,Cao, C. Z.,Zheng, Y. M.,Guo, Q.. 2016

[7]Study on the Production and Consumption of Strawberry in Beijing. Wang, L. N.,Zhang, Y. T.,Zhong, C. F.,Wang, G. X.,Dong, J.,Chang, L. L.. 2014

[8]Social-Ecological Patterns of Soil Heavy Metals Based on a Self-Organizing Map ( SOM): A Case Study in Beijing, China. Wang, Binwu,Sun, Danfeng,Wang, Binwu,Sun, Danfeng,Li, Hong. 2014

[9]The Development of Agricultural Informatization in Beijing. Tan, C. P.,Sun, S. F.,Zhang, J. F.,Zheng, H. G.. 2015

[10]Current Situation of Eco-environment Construction, Effectiveness, and Study of Development Path in Economically Weak Beijing Rural Area. Zhou, Zhong-Ren,Zhou, Zhu-Jun. 2015

[11]Looking Forward to Beijing Agricultural Informationization in the 13th five years plan. Wei, Qing-feng,Luo, Chang-shou,Wei, Qing-feng,Luo, Chang-shou,Tang, Yan. 2016

[12]Development of Biogas Industry in Beijing. Zhang, Huizhi,Li, Hong,Huang, Baorong. 2015

[13]High-throughput sequencing-based analysis of the composition and diversity of endophytic bacterial community in seeds of "Beijing" hybrid maize planted in China. Liu, Yang,Wang, Ronghuan,Chen, Chuanyong,Xu, Tianjun,Zhao, Jiuran,Liu, Yang,Cao, Yanhua,Bai, Feirong,Zhang, Xin,Cheng, Chi,Li, Yinhu,Qiu, Chuangzhao,Dai, Wenkui.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：北京市农林科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台