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Bioaerosols in public and tourist buses

机译：公共和旅游巴士的生物溶胶

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摘要

Public bus system worldwide transports daily more than 34 million people; therefore, air quality inside buses is an important urban air pollution issue. Airborne microbiological composition and abundance was examined inside five different fuel type buses (diesel (EURO IV and EURO V), hybrid diesel (HD), compressed natural gas (CNG), hybrid natural gas (HCNG) and electric vehicle (EV)) from Barcelona bus system, inside and outside the tourist bus and different periods of campaigns (summer: May-September and winter: November-March). Quantitative PCR was used to quantify total bacteria, Penicillium/Aspergillus and Cladosporium sp. and Kinetic Chromogenic Limulus Amebocyte Lysate (LAL) Assay for endotoxins. The targeted 16S rRNA genes were amplified and sequenced to asses bacterial community composition and biodiversity. Regarding the targeted microorganisms, the results showed low bioaerosol concentrations, being fungi and endotoxins below the detection limit, although bacterial airborne has a geometric average of 10(3) equivalent E. Coli genomes/m(3). Airborne bacterial community biodiversity showed that Actinobacteria and Proteobacteria were the most abundant Phylum in the different sampled buses and in the two seasons (summer: May-September and winter: November-March). While regarding to genera taxonomic category, the different fuel type buses presented a high overlap degree, being Cutibacterium the most abundant and Paracoccus the one only detected inside. The different seasons showed that the different taxonomic genera decrease from summer: May-September to winter: November-March and in this case Paracoccus was the most abundant. Overall, biodiversity inside buses is greatly affected by the presence of humans inside, but also by the outdoor sources at the moment of the sampling, and the seasonal period, more than the type of bus.
机译：全球公共巴士系统每天运输超过3400万人;因此，公共汽车内的空气质量是一个重要的城市空气污染问题。在五个不同的燃料型公交车内检查了空气传播的微生物组成和丰度（柴油（欧洲IV和EURO V），杂交柴油（HD），压缩天然气（CNG），混合天然气（HCNG）和电动车辆（EV））巴塞罗那巴士系统，旅游巴士内外，以及不同的竞选期（夏季：5月至9月和冬季：11月）。定量PCR用于量化总细菌，青霉钙/曲霉菌和囊孢子SP。和内毒素的动力学发色束氨基细胞裂解物（LAL）测定。扩增靶向的16S rRNA基因并测序以均衡细菌群落组成和生物多样性。关于靶向微生物，结果显示出低生物溶胶浓度，是真菌和内毒素低于检测极限，但细菌空气传播的几何平均值为10（3）个当量大肠杆菌基因组/ M（3）。空气中的细菌群落生物多样性表明，肌动菌和植物间体外是不同采样的公共汽车和两个季节中最丰富的门（夏季：9月和冬季：11月至3月）。在关于属分类类别的同时，不同的燃料型总线呈现出高重叠程度，是粘酶最丰富，脱裂菌唯一的矛盾。不同的季节表明，不同的分类属于夏季下降：5月至冬季：11月至3月，在这种情况下，帕拉科克是最丰富的。总体而言，公共汽车内的生物多样性受到人类内部存在的影响很大，也受到户外来源的影响，以及季节性期间，比公共汽车的类型更多。

著录项

  • 来源
    《Aerobiologia》 |2021年第3期|525-541|共17页
  • 作者

    Fernandez-Iriarte Amaia; Duchaine Caroline; Degois Jodelle; Mbareche Hamza; Veillette Marc; Moreno Natalia; Amato Fulvio; Querol Xavier; Moreno Teresa;

  • 作者单位

    Spanish Res Council CSIC Inst Environm Assessment & Water Studies IDAEA 18-26 Jordi Girona Barcelona 08034 Spain|Univ Politecn Catalunya UPC Dept Nat Resources & Environm Ind & TCI Engn EMIT Manresa 08242 Spain;

    Univ Laval Inst Univ Cardiol & Pneumol Quebec IUCPQ Ctr Rech Quebec City PQ G1V 4G5 Canada|Bioaerosols Quebec City PQ Canada;

    Univ Laval Inst Univ Cardiol & Pneumol Quebec IUCPQ Ctr Rech Quebec City PQ G1V 4G5 Canada;

    Univ Laval Inst Univ Cardiol & Pneumol Quebec IUCPQ Ctr Rech Quebec City PQ G1V 4G5 Canada;

    Univ Laval Inst Univ Cardiol & Pneumol Quebec IUCPQ Ctr Rech Quebec City PQ G1V 4G5 Canada;

    Spanish Res Council CSIC Inst Environm Assessment & Water Studies IDAEA 18-26 Jordi Girona Barcelona 08034 Spain;

    Spanish Res Council CSIC Inst Environm Assessment & Water Studies IDAEA 18-26 Jordi Girona Barcelona 08034 Spain;

    Spanish Res Council CSIC Inst Environm Assessment & Water Studies IDAEA 18-26 Jordi Girona Barcelona 08034 Spain;

    Spanish Res Council CSIC Inst Environm Assessment & Water Studies IDAEA 18-26 Jordi Girona Barcelona 08034 Spain;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Bioaerosols; Public buses; Indoor air quality; Tourist bus;

    机译：生物公共汽车;室内空气质量;旅游巴士;

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