Special Issue "Current Issues in Traffic-Related Air Quality and Associated Inequity Problems"

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Air Quality".

Deadline for manuscript submissions: 10 April 2023 | Viewed by 845

Special Issue Editors

School of Transportation, Southeast University, Nanjing 211189, China
Interests: road traffic emission modelling; road transport electrification; green transportation strategy
Special Issues, Collections and Topics in MDPI journals
School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
Interests: PM2.5; emission source; urban air pollution; atmospheric aging; atmospheric oxidation capacity; health impacts; carbon neutral
Department of Urban Studies and Planning, Massachusetts Institute of Technology, Cambridge, MA 02139, USA
Interests: urban environmental sensing; sustainable transportation system; life-cycle assessment; uncertainty analysis
Department of Civil & Mineral Engineering, University of Toronto, Toronto, ON M5S 1A4, Canada
Interests: mobile monitoring measurements; eco-driving; machine learning; traffic image processing; ultrafine particles; spatiotemporal analysis

Special Issue Information

Dear Colleagues,

Traffic-related air pollution, or TRAP, is one of the major risks to the atmospheric environment. Although cleaner on-road vehicle technologies are emerging on all fronts, the issue of TRAP still exists ubiquitously. While electric light-duty vehicles are emerging across the globe, heavy-duty vehicles, which dominate on-road NOx, VOCs, and PM emissions, are lagging behind on their electrification. Existing electric vehicles weigh more than their conventionally fueled counterparts due to heavy battery packs, generating more non-exhaust emissions from brakewear, tyrewear, and roadwear. Moreover, TRAP has been linked to multiple adverse health effects, while epidemiological studies have found that people that are exposed to higher TRAP concentrations are those with lower household stability and less accessibility to mobility services. The inequity problem is also revealed by the higher exposure of workers at specific positions, such as subway operators and bus drivers. Summarizing existing literature, we find the focus of TRAP research tends to shift from light-duty vehicles to heavy-duty vehicles, from tailpipe emissions to non-tailpipe emissions, from traffic-related air quality to a model-chain evaluation consisting of TRAP, public health, and inequity issues. We propose the Special Issue “Current Issues in Traffic-Related Air Quality and Associated Inequity Problems” to collect state-of-the-art research articles in the field with the hope of sharing views, findings, strategies, and recommendations on everyone's equitable access to clean air.

Dr. Ran Tu
Dr. Shunyao Wang
Dr. An Wang
Dr. Junshi Xu
Guest Editors

Manuscript Submission Information

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  • vehicle non-tailpipe emission measurement, modelling and visualization
  • the impact of electric vehicles from the perspectives of air quality and health
  • novel techniques in characterizing, assessing and improving traffic-related air quality (TRAQ)
  • TRAQ research in developing regions with scarce data
  • relationships between traffic-related air pollution (TRAP) and health impacts in developed and developing regions
  • advancement in equitable TRAP management strategies, monitoring, and modelling
  • identification and quantification of TRAQ-related inequity problems
  • regional TRAQ improvement associated with carbon neutrality and smart city

Published Papers (1 paper)

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Effects of COVID-19 Control Measures on the Concentration and Composition of PM2.5-Bound Polycyclic Aromatic Hydrocarbons in Shanghai
Atmosphere 2023, 14(1), 95; https://doi.org/10.3390/atmos14010095 - 01 Jan 2023
Cited by 1 | Viewed by 553
In order to explore the effects of COVID-19 control measures on the concentration and composition of PM2.5-bound polycyclic aromatic hydrocarbons (PAHs), and to better understand the sources of PM2.5-bound PAHs, PM2.5, samples were collected at two sites [...] Read more.
In order to explore the effects of COVID-19 control measures on the concentration and composition of PM2.5-bound polycyclic aromatic hydrocarbons (PAHs), and to better understand the sources of PM2.5-bound PAHs, PM2.5, samples were collected at two sites in urban and suburban areas of Shanghai before the lockdown, during the lockdown, after the lockdown in 2020, and during the same periods in 2019. The mass concentrations of 21 individual PAHs were determined via GC-MS analysis. While the COVID-19 control measures significantly reduced the absolute concentration of PM2.5-bound PAHs, they had no significant effect on their relative abundances, indicating that the significantly reduced traffic emission may not originally be the major source of PAHs in Shanghai. The differences in the composition of PM2.5-bound PAHs at three different lockdown-related periods may be caused by the gas-particle distribution of semi-volatile PAHs. The similarity in the composition of PM2.5-bound PAHs in different functional areas and different periods brings more uncertainties to the identification of PAH sources using the diagnostic ratios. During the lockdown period, the toxic equivalent concentration of PM2.5-bound PAHs in Shanghai was estimated to decrease by about 1/4, which still exhibits substantial carcinogenic risk upon exposure via inhalation. Full article
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