The size distribution of airborne bacteria and human pathogenic bacteria in a commercial composting plant

作     者：Min Gao Ziye Yang Yajie Guo Mo Chen Tianlei Qiu Xingbin Sun Xuming Wang Min Gao;Ziye Yang;Yajie Guo;Mo Chen;Tianlei Qiu;Xingbin Sun;Xuming Wang

作者机构：Beijing Key Laboratory of Agricultural Genetic Resources and BiotechnologyBeijing Agro-Biotechnology Research CenterBeijing Academy of Agriculture and Forestry SciencesBeijing 100097China College of ForestryNortheast Forestry UniversityHarbin 150040China 

出 版 物：《Frontiers of Environmental Science & Engineering》 (环境科学与工程前沿（英文）)

年 卷 期：2021年第15卷第3期

页      面：87-96页

核心收录：

学科分类：07[理学] 070602[理学-大气物理学与大气环境] 0706[理学-大气科学] 

基　　金：the Beijing Agriculture Innovation Consortium(Grant No.BAIC04-2020) the Research Foundation of BAAFS(Grant No.KJCX20200402) the National Natural Science Foundation of China(Grant Nos.51878053,41961134033) the Beijing Natural Science Foundation(Grant No.6182019) the Key Research and Development Program of Ningxia Autonomous Region(Grant No.2019BFG02015) the National Key R&D Plan(Grant Nos.2016YFD0800205,2017YFD0801402) 

主　　题：Size distribution Airborne bacteria Biological diversity Human pathogenic bacteria Composting plants 

摘      要：Composting plants are regarded as one of the important sources of environmental ***,limitations in the size distribution of airborne bacteria have prevented our comprehensive understanding of their risk to human health and their dispersal *** this study,different sizes of airborne bacteria were collected using an eight-stage impactor from a full-scale composting ***-related abundance and communities of airborne bacteria as well as human pathogenic bacteria(HPB)were investigated using 16S rRNA gene sequencing coupled with droplet digital *** results indicate that the bacterial concentrations from the eight stages were approximately 10^(4)-105copies/m^(3).Although no statistical correlation was detected between the particle size and the Shannon index,the influence of size on bacterial lineages was observed in both composting and packaging *** airborne bacteria from different stages,the dominant phyla were Firmicutes,Proteobacteria,and Actinobacteria,and the dominant genera was *** out of eight HPB with a small geometric mean aerodynamic diameter had a high concentration in composting *** on diameters of 2.42 to 5.09μm,most HPB in the composting areas were expected to be deposited on the bronchus and secondary ***,in the packaging areas,the deposition of HPB(diameters 3.70 to 8.96μm)occurred in the upper part of the respiratory *** results on the size distribution,abundance,and diversity of these bacteria offer important information for the systematic evaluation of bacterial pathogenicity and the potential health impacts on workers in composting plants and the surrounding residents.