Carbonyl-amine condensation coupled ozonolysis of dipropylamine and styrene: Decay kinetics, reaction mechanism, secondary organic aerosol formation and cytotoxicity.

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  • Additional Information
    • Source:
      Publisher: IOS Press Country of Publication: Netherlands NLM ID: 100967627 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1001-0742 (Print) Linking ISSN: 10010742 NLM ISO Abbreviation: J Environ Sci (China) Subsets: MEDLINE
    • Publication Information:
      Publication: Amsterdam : IOS Press
      Original Publication: Beijing : Editorial Dept. of Journal of Environmental Sciences (China), 1989-
    • Subject Terms:
      Ozone*/chemistry ; Aerosols* ; Amines*/chemistry ; Amines*/toxicity ; Styrene*/chemistry ; Styrene*/toxicity ; Air Pollutants*/chemistry ; Air Pollutants*/toxicity; Kinetics ; Humans ; Oxidation-Reduction ; Models, Chemical
    • Abstract:
      Oxidation of organic amines (OAs) or aromatic hydrocarbons (AHs) produces carbonyls, which further react with OAs to form carbonyl-amine condensation products, threatening environmental quality and human health. However, there is still a lack of systematic understanding of the carbonyl-amine condensation reaction processes of OAs or between OAs and AHs, and subsequent environmental health impact. This work systematically investigated the carbonyl-amine condensation coupled ozonolysis kinetics, reaction mechanism, secondary organic aerosol (SOA) formation and cytotoxicity from the mixture of dipropylamine (DPA) and styrene (STY) by a combined method of product mass spectrometry identification, particle property analysis and cell exposure evaluation. The results from ozonolysis of DPA and STY mixture revealed that STY inhibited the ozonolysis of DPA to different degrees to accelerate its own decay rate. The barycenter of carbonyl-amine condensation reactions was shifted from inside of DPA to between DPA and STY, which accelerated STY ozonolysis, but slowed down DPA ozonolysis. For the first time, ozonolysis of DPA and STY mixture to complex carbonyl-amine condensation products through the reactions of DPA with its carbonyl products, DPA with STY's carbonyl products and DPA's bond breakage product with STY's carbonyl products was confirmed. These condensation products significantly contributed to the formation and growth of SOA. The SOA containing particulate carbonyl-amine condensation products showed definite cytotoxicity. These findings are helpful to deeply and comprehensively understand the transformation, fate and environmental health effects of mixed organics in atmospheric environment.
      Competing Interests: Declaration of Competing Interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
      (Copyright © 2024. Published by Elsevier B.V.)
    • Contributed Indexing:
      Keywords: Aromatic hydrocarbons (AHs); Carbonyl-amine condensation; Coupled ozonolysis; Organic amines (OAs); Secondary pollution; Toxicity assessment
    • Accession Number:
      66H7ZZK23N (Ozone)
      0 (Aerosols)
      0 (Amines)
      44LJ2U959V (Styrene)
      0 (Air Pollutants)
    • Publication Date:
      Date Created: 20240824 Date Completed: 20240824 Latest Revision: 20240824
    • Publication Date:
      20240826
    • Accession Number:
      10.1016/j.jes.2024.01.020
    • Accession Number:
      39181656