Seasonality, sources apportionment, human health risks assessments, and potential implications on the atmospheric chemistry of polycyclic aromatic hydrocarbons in size-segregated aerosols from a Romanian metropolitan area

被引：3

作者：

Amarandei, Cornelia ^{[1
,2
]}

Negru, Alina Giorgiana ^{[1
,2
]}

Iancu, Cristina ^{[1
,3
]}

Olariu, Romeo Iulian ^{[1
,2
,3
]}

Arsene, Cecilia ^{[1
,2
,3
]}

机构：

[1] “Alexandru Ioan Cuza” University of Iasi, Research Center with Integrated Techniques for Atmospheric Aerosol Investigation in Romania (RECENT-AIR), 11 Carol I, Iasi

[2] “Alexandru Ioan Cuza” University of Iasi, Integrated Centre of Environmental Science Studies in the North Eastern Region (CERNESIM), 11 Carol I, Iasi

[3] “Alexandru Ioan Cuza” University of Iasi, Faculty of Chemistry, 11 Carol I, Iasi

来源：

Chemosphere | 2024年 / 368卷

基金：

欧盟地平线“2020”;

关键词：

Aerosol size distribution; Emission sources; Health risks; PAHs; Respiratory deposition;

D O I：

10.1016/j.chemosphere.2024.143738

中图分类号：

学科分类号：

摘要：

Urbanization and industrialization are important transformations shaping the current statement of the society, enhancing significantly the combustion emissions which are threatening the global climate system, air quality, and human health. These emissions contain polycyclic aromatic hydrocarbons (PAHs) which are well known for their high toxicity. The present study is the first assessing the seasonal variation of 17 PAHs in size segregated fractions of atmospheric aerosol particles from a Romanian metropolitan area. In addition to sources apportionment and health risks, the potential role of PAHs on the atmospheric chemistry in the area was also addressed. Higher PAHs concentrations were determined in winter season, the highest values being quantified for benzo[b]fluoranthene, benzo[a]pyrene, and indeno[1,2,3-cd]pyrene. Each analyzed PAH exhibited a dominant peak in the accumulation mode (0.1–1.0 μm), with maxima at 381 nm. Gasoline combustion was identified as a significant contributor to the PAHs levels in the atmospheric aerosols from the area. Biomass-burning contributions were highlighted during the winter and autumn seasons. The positive matrix factorization (PMF) model apportioned four PAHs sources, as follows: vehicular (31%), mixed combustion (33%), biomass and wood burning (19%), and coal and natural gas combustion (18%) sources. Concentration-weighted trajectory (CWT) analysis method revealed clear contributions to PAHs abundances from local and regional air masses. Alveolar region of adults seems to have the highest susceptibility for PAHs deposition. Values exceeding acceptable limits for carcinogenic risk throughout the year are associated with benzo[a]pyrene, benzo[b]fluoranthene, indeno[1,2,3-cd]pyrene, benzo[a]anthracene etc. The present study can be considered as a reference in the region in order measures of mitigation and control for PAHs emission sources to be introduced. © 2024 The Authors

引用

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