Health risks of environmentally persistent free radicals in atmospheric particulate matter during the spring festival travel season in Tainan, Taiwan.

Autor: Wang YC; Department of Marine Environment and Engineering, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan.; Department of Chemistry, National Kaohsiung Normal University, Kaohsiung, Taiwan., Ching WM; Department of Chemistry, National Kaohsiung Normal University, Kaohsiung, Taiwan., Lee CL; Department of Marine Environment and Engineering, National Sun Yat-Sen University, Kaohsiung, 804, Taiwan. linnohc@fac.nsysu.edu.tw.
Jazyk: angličtina
Zdroj: Environmental science and pollution research international [Environ Sci Pollut Res Int] 2024 Nov; Vol. 31 (54), pp. 63301-63311. Date of Electronic Publication: 2024 Oct 31.
DOI: 10.1007/s11356-024-35436-7
Abstrakt: Environmentally persistent free radicals (EPFRs) and polycyclic aromatic hydrocarbons (PAHs) are persistent pollutants in atmospheric particulate matter that are detrimental to human health. This study collected atmospheric particulate matter during and after the spring festival travel season in Tainan, Taiwan, from various locations and analyzed the carbon composition and PAH isomeric ratios to identify the sources. In this study, EPFR concentrations were measured using electron paramagnetic resonance spectroscopy, with the highest concentration found to be 3.04 × 10(12) spins/m 3 . EPFRs contained predominantly oxygen-centered radicals in PM2.5, which are mainly existed in PM1. The results show that EPFR concentrations on PM, measured per unit volume (spins/m 3 ) or mass (spins/g), were highest during the spring festival travel season. The daily inhalation exposure to the sum of EPFRs and PAHs in PM2.5 was estimated to be equivalent to inhaling 0.11-0.15 cigarette tar EPFRs per day. This report is the first to document EPFRs in environmental atmospheric particulate matters in Taiwan, which has significantly contributed to local air pollution control and reduced exposure risks to public health in Tainan.
Competing Interests: Declarations. Consent to participate: Informed consent was obtained from all individual participants included in the study. Consent for publication: The participant has consented to the submission of the case report to the journal. Competing interests: The authors declare no competing interests.
(© 2024. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.)
Databáze: MEDLINE
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