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  Ozone Initiates Human-Derived Emission of Nanocluster Aerosols

Yang, S., Licina, D., Weschler, C. J., Wang, N., Zannoni, N., Li, M., et al. (2021). Ozone Initiates Human-Derived Emission of Nanocluster Aerosols. Environmental Science & Technology, 55(21), 14536-14545. doi:10.1021/acs.est.1c03379.

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Genre: Journal Article

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 Creators:
Yang, Shen, Author
Licina , Dusan, Author
Weschler, Charles J., Author
Wang, Nijing1, Author              
Zannoni, Nora1, Author              
Li, Mengze1, Author              
Vanhanen, Joonas, Author
Langer, Sarka, Author
Wargocki, Pawel, Author
Williams, Jonathan1, Author              
Bekö , Gabriel, Author
Affiliations:
1Atmospheric Chemistry, Max Planck Institute for Chemistry, Max Planck Society, ou_1826285              

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 Abstract: Nanocluster aerosols (NCAs, particles <3 nm) are important players in driving climate feedbacks and processes that impact human health. This study reports, for the first time, NCA formation when gas-phase ozone reacts with human surfaces. In an occupied climate-controlled chamber, we detected NCA only when ozone was present. NCA emissions were dependent on clothing coverage, occupant age, air temperature, and humidity. Ozone-initiated chemistry with human skin lipids (particularly their primary surface reaction products) is the key mechanism driving NCA emissions, as evidenced by positive correlations with squalene in human skin wipe samples and known gaseous products from ozonolysis of skin lipids. Oxidation by OH radicals, autoxidation reactions, and human-emitted NH3 may also play a role in NCA formation. Such chemical processes are anticipated to generate aerosols of the smallest size (1.18–1.55 nm), whereas larger clusters result from subsequent growth of the smaller aerosols. This study shows that whenever we encounter ozone indoors, where we spend most of our lives, NCAs will be produced in the air around us.

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Language(s): eng - English
 Dates: 2021-10-21
 Publication Status: Published online
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1021/acs.est.1c03379
 Degree: -

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Title: Environmental Science & Technology
  Abbreviation : Environ. Sci. Technol.
Source Genre: Journal
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Publ. Info: Easton, PA : American Chemical Society
Pages: - Volume / Issue: 55 (21) Sequence Number: - Start / End Page: 14536 - 14545 Identifier: ISSN: 0013-936X
CoNE: https://pure.mpg.de/cone/journals/resource/954921342157