Biological Aerosol Particles in Polluted Regions

Hu, Wei; Wang, Zihan; Huang, Shu; Ren, Lujie; Yue, Siyao; Li, Ping; Xie, Qiaorong; Zhao, Wanyu; Wei, Lianfang; Ren, Hong; Wu, Liguang; Deng, Junjun; Fu, Pingqing

doi:10.1007/s40726-020-00138-4

Cited by 40 publications

(20 citation statements)

References 198 publications

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“…Primary biological aerosol particles (PBAPs) constitute a major fraction of the atmospheric aerosol (up to ∼20%–40%) (Fröhlich‐Nowoisky et al., 2016; Hu et al., 2020). A large and rapidly growing scientific base exists regarding uncertainties associated with PBAPs, including their important role in cloud/ice nuclei processes and their sources (DeLeon‐Rodriguez et al., 2013; Després et al., 2012; Gute et al., 2020; Huffman et al., 2013; Morris et al., 2014; Seifried et al., 2020; Wilson et al., 2015).…”

Section: Introductionmentioning

confidence: 99%

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Oxidation of Proteinaceous Matter by Ozone and Nitrogen Dioxide in PM2.5: Reaction Mechanisms and Atmospheric Implications

et al. 2021

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Section: Introductionmentioning

confidence: 99%

“…

Primary biological aerosol particles (PBAPs) constitute a major fraction of the atmospheric aerosol (up to ∼20%-40%) (Fröhlich-Nowoisky et al, 2016;Hu et al, 2020). A large and rapidly growing scientific base exists regarding uncertainties associated with PBAPs, including their important role in cloud/ice nuclei processes and their sources (

…”

mentioning

confidence: 99%

Oxidation of Proteinaceous Matter by Ozone and Nitrogen Dioxide in PM2.5: Reaction Mechanisms and Atmospheric Implications

et al. 2021

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“…Therefore, it is necessary to further develop more precise methods of microbial source identification to uncover the contribution of various potential sources of microorganisms in the air. Biomarkers such as proteins, amino acids, carbohydrates, and lipids have been recently applied to aid the identification of aerosol sources and study the aerosol transport trajectory (Hu et al, 2020). Besides, the influence of the chemical components in aerosols on the source distribution of airborne microorganisms remains unclear.…”

Section: Source Identification Resultsmentioning

confidence: 99%

The source and transport of bioaerosols in the air: A review

Xie

Bai

et al. 2020

Front. Environ. Sci. Eng.

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Recent pandemic outbreak of the corona-virus disease 2019 (COVID-19) has raised widespread concerns about the importance of the bioaerosols. They are atmospheric aerosol particles of biological origins, mainly including bacteria, fungi, viruses, pollen, and cell debris. Bioaerosols can exert a substantial impact on ecosystems, climate change, air quality, and public health. Here, we review several relevant topics on bioaerosols, including sampling and detection techniques, characterization, effects on health and air quality, and control methods. However, very few studies have focused on the source apportionment and transport of bioaerosols. The knowledge of the sources and transport pathways of bioaerosols is essential for a comprehensive understanding of the role microorganisms play in the atmosphere and control the spread of epidemic diseases associated with them. Therefore, this review comprehensively summarizes the up to date progress on the source characteristics, source identification, and diffusion and transport process of bioaerosols. We intercompare three types of diffusion and transport models, with a special emphasis on a widely used mathematical model. This review also highlights the main factors affecting the source emission and transport process, such as biogeographic regions, land-use types, and environmental factors. Finally, this review outlines future perspectives on bioaerosols.

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“…Subsequently, many studies on atmospheric aerosols were undertaken in order to understand the sources and evolution mechanisms of aerosols and discuss their effects on climate and human health. It is well known that atmospheric aerosols can impact on radiation forcing, the hydrological cycle, regional and global climate and human health (Ramanathan et al, 2001;Kanakidou et al, 2005;Pöschl, 2005;Li et al, 2016;Wang et al, 2016;Shrivastava et al, 2017a;Hu et al, 2020;Su et al, 2020). Generally, atmospheric organic aerosols (OA) contribute 20-90% of the particulate matter (PM), in which ca.…”

Section: Introductionmentioning

confidence: 99%

Comment on acp-2021-136

2021

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Secondary organic aerosols (SOA) play a significant role in atmospheric chemistry. However, little is known about the vertical profiles of SOA in the urban boundary layer (UBL). This gap in the knowledge constrains the SOA simulation in chemical transport models. Here, we synchronously collected aerosol samples at 8 m, 120 m and 260 m based on a 325-m meteorological tower in urban Beijing from August 15 th to September 10 th , 2015. Strict emission controls were implemented during this period for the 2015 China Victory Day Parade. The sum of biogenic SOA tracers increased withheight. The fraction of SOA from isoprene oxidation increased, whereas the fraction of monoterpene and sesquiterpene SOA decreased with height. The 2,3-dihydroxy-4-oxopentanoic acid (DHOPA), one tracer of anthropogenic SOA from toluene oxidation, also increased with height. The complicated vertical profiles of SOA tracers highlighted the needs to measure SOA within the UBL. The sum of estimated secondary organic carbon (SOC) ranged from 341 to 673 ngC m -3 . The increase in the SOC fraction from isoprene and toluene with height was found to be more related to regional transport whereas the decrease in the SOC from monoterpene and sesquiterpene with height was more subject to local emissions. Emission controls during the parade reduced SOC by 4-35% with toluene SOC decreasing more than the other SOC. This study demonstrates that vertical distributions of SOA within the UBL are complex, and the vertical profiles of SOA concentrations and sources should be considered in the future field and modelling studies.

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Biological Aerosol Particles in Polluted Regions

Cited by 40 publications

References 198 publications

Oxidation of Proteinaceous Matter by Ozone and Nitrogen Dioxide in PM2.5: Reaction Mechanisms and Atmospheric Implications

Oxidation of Proteinaceous Matter by Ozone and Nitrogen Dioxide in PM2.5: Reaction Mechanisms and Atmospheric Implications

The source and transport of bioaerosols in the air: A review

Comment on acp-2021-136

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