Sources-attributed contributions to health risks associated with PM 2.5 -bound polycyclic aromatic hydrocarbons during the warm and cold seasons in an urban area of Eastern Asia.

Autor: Ting YC; Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan. Electronic address: dannyting@ntu.edu.tw., Zou YX; Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan., Pan SY; Institute of Environmental and Occupational Health Sciences, National Yang Ming Chiao Tung University, Taipei, Taiwan., Ko YR; Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan., Ciou ZJ; Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan., Huang CH; Graduate Institute of Environmental Engineering, National Taiwan University, Taipei, Taiwan.
Jazyk: angličtina
Zdroj: The Science of the total environment [Sci Total Environ] 2024 Apr 20; Vol. 922, pp. 171325. Date of Electronic Publication: 2024 Feb 28.
DOI: 10.1016/j.scitotenv.2024.171325
Abstrakt: Despite the well-established recognition of the health hazards posed by PM 2.5 -bound PAHs, a comprehensive understanding of their source-specific impact has been lacking. In this study, the health risks associated with PM 2.5 -bound polycyclic aromatic hydrocarbons (PAHs) and source-specific contributions were investigated in the urban region of Taipei during both cold and warm seasons. The levels of PM 2.5 -bound PAHs and their potential health risks across different age groups of humans were also characterized. Diagnostic ratios and positive matrix factorization analysis were utilized to identify the sources of PM 2.5 -bound PAHs. Moreover, potential source contribution function (PSCF), concentration-weighted trajectory (CWT) and source regional apportionment (SRA) analyses were employed to determine the potential source regions. Results showed that the total PAHs (TPAHs) concentrations ranged from 0.08 to 2.37 ng m -3 , with an average of 0.69 ± 0.53 ng m -3 . Vehicular emissions emerged as the primary contributor to PM 2.5 -bound PAHs, constituting 39.8 % of the TPAHs concentration, followed by industrial emissions (37.6 %), biomass burning (13.8 %), and petroleum/oil volatilization (8.8 %). PSCF and CWT analyses revealed that industrial activities and shipping processes in northeast China, South China Sea, Yellow Sea, and East China Sea, contributed to the occurrence of PM 2.5 -bound PAHs in Taipei. SRA identified central China as the primary regional contributor of ambient TPAHs in the cold season and Taiwan in the warm season, respectively. Evaluations of incremental lifetime cancer risk demonstrated the highest risk for adults, followed by children, seniors, and adolescents. The assessments of lifetime lung cancer risk showed that vehicular and industrial emissions were the main contributors to cancer risk induced by PM 2.5 -bound PAHs. This research emphasizes the essential role of precisely identifying the origins of PM 2.5 -bound PAHs to enhance our comprehension of the related human health hazards, thus providing valuable insights into the mitigation strategies.
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 Elsevier B.V. All rights reserved.)
Databáze: MEDLINE
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