南京市某地区大气多环芳烃污染及空气微生物多样性相关分析
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国家自然科学基金(82073630),国家自然基金海外及港澳学者合作研究基金(81728018);江苏省自然科学基金(BK20161571);江苏省高校自然科学研究重大项目(16KJA330002)


Studies on correlation of atmospheric PAH pollution and microbial diversity in a certain area of Nanjing
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    目的:研究南京大气中多环芳烃污染水平,探究大气多环芳烃浓度与空气微生物群落的相关性。方法:采用气相色谱-质谱联用仪定量分析2019—2020年春秋季南京市大气中多环芳烃(polycyclic aromatic hydrocarbon,PAH)的浓度;同时采用16S rRNA测序测定空气中微生物群落,对大气PAH的浓度与微生物群落进行Pearson相关性分析。结果:通过分析2019年和2020年大气PAH浓度数据发现,大气中菲Phe、荧蒽Fla和芘Pyr占主要成分,2019年秋季大气PAH浓度明显高于春季。2019年大气总PAH浓度高于2020年。在微生物门水平上,厚壁菌门(Firmicutes)、放线菌门(Actinobacteria)、变形菌门(Proteobacteria)均为2019年和2020年的优势菌门。在微生物属水平上,芽胞杆菌属为2019年与2020年共同优势菌属。同时,PAH污染与微球菌属(放线菌门)和芽胞杆菌属(厚壁菌门)的丰度呈正相关。结论:大气PAH污染可能与空气微生物的种类和丰度的变化有关,并具有潜在的健康风险。

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    Objective:This study aims to observe the levels of atmospheric polycyclic aromatic hydrocarbon(PAH)in Nanjing,and explore the correlation between PAH and air microbial community. Methods:The concentration of PAH was determined by GC-MS,and microbial community diversity was analyzed by 16S rRNA gene sequencing. Pearson correlation analysis was conducted between the concentration of atmospheric PAH and the microbial community. Results:It was found that Phe,Fla and Pyr are the main components of atmospheric PAH. The total concentration of atmospheric PAH in 2019 was higher than that in 2020. The concentration of atmospheric PAH in autumn of 2019 was significantly higher than that in spring. At the level of phylum,the dominant phylum in both 2019 and 2020 are Firmicutes,Actinobacteria and Proteobacteria. In terms of genus,Bacillus is the common dominant bacteria of 2019 and 2020. In the correlation analysis between PAH and microbial populations,it was found that the abundance of Bacillus in Firmicutes and Micrococcus in Actinobacteria were correlated with atmospheric PAH. Conclusion:Atmospheric PAH pollution may be related to the changes of species and abundance of air microorganisms which may be potential health risks.

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朱宇琪,吴 昊,热那古力·吾斯曼江,沈梦凡,谈依婷,李 玥,王 丽,吴 倩.南京市某地区大气多环芳烃污染及空气微生物多样性相关分析[J].南京医科大学学报(自然科学版),2022,42(3):415-420

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  • 收稿日期:2021-11-17
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  • 在线发布日期: 2022-03-28
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