Methylsiloxanes from Vehicle Emissions Detected in Aerosol Particles.
aerosol
fuel
lubricating oil
methylsiloxane
vehicle emissions
Journal
Environmental science & technology
ISSN: 1520-5851
Titre abrégé: Environ Sci Technol
Pays: United States
ID NLM: 0213155
Informations de publication
Date de publication:
26 09 2023
26 09 2023
Historique:
medline:
27
9
2023
pubmed:
12
9
2023
entrez:
12
9
2023
Statut:
ppublish
Résumé
Methylsiloxanes have gained growing attention as emerging pollutants due to their toxicity to organisms. As man-made chemicals with no natural source, most research to date has focused on volatile methylsiloxanes from personal care or household products and industrial processes. Here, we show that methylsiloxanes can be found in primary aerosol particles emitted by vehicles based on aerosol samples collected in two tunnels in São Paulo, Brazil. The aerosol samples were analyzed with thermal desorption-proton transfer reaction-mass spectrometry (TD-PTR-MS), and methylsiloxanes were identified and quantified in the mass spectra based on the natural abundance of silicon isotopes. Various methylsiloxanes and derivatives were found in aerosol particles from both tunnels. The concentrations of methylsiloxanes and derivatives ranged 37.7-377 ng m
Identifiants
pubmed: 37698874
doi: 10.1021/acs.est.3c03797
pmc: PMC10537456
doi:
Substances chimiques
Vehicle Emissions
0
Aerosols
0
Environmental Pollutants
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
14269-14279Références
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