University of Surrey

Test tubes in the lab Research in the ATI Dance Research

Car users exposure to particulate matter and gaseous air pollutants in megacity Cairo

Abbassa, Rana Alaa, Kumar, Prashant and El-Gendy, Ahmed (2020) Car users exposure to particulate matter and gaseous air pollutants in megacity Cairo Sustainable Cities and Society, 56, 102090.

[img] Text
Rana..Kumar (2020)_CairoCarUsers SCS.pdf - Accepted version Manuscript
Restricted to Repository staff only until 2 February 2022.

Download (1MB)


Cars are a dominant mode of transport in megacity Cairo, yet there is a scarcity of personal exposure data on air pollution. This is the first car users exposure study that investigates the underlying factors affecting particulate matter (PM); with aerodynamic diameter ≤2.5 μm (PM2.5) and ≤10 μm (PM10), nitrogen oxides (NO2) and carbon monoxide (CO) concentrations across Greater Cairo. Data is collected using a portable monitor during morning and evening peak hours for three car settings (open window; closed window; AC On). Open window consistently resulted in highest PM10 and PM2.5 concentrations (65 % and 48 % higher than AC On). However, most Cairo commuters do not have AC and are exposed to levels of PM10 and PM2.5 as high as 227 and 119 μg/m3. Evening peak hours experience higher pollution compared to morning peak. Zones with construction activities have 64 % higher PM10 concentrations. PM2.5 concentrations in cross-city routes are 3.6-times those in high-activity zones. The derived PM2.5/PM10 ratios are relatively low (<0.5) indicating a dominance of coarse particles fraction. AC On resulted in lowest average concentrations of NO2 and highest CO levels. This study provides preliminary air pollutants exposure mapping for car commuters that aims to feed into control strategies.

Item Type: Article
Divisions : Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :
Abbassa, Rana Alaa
El-Gendy, Ahmed
Date : 5 February 2020
Funders : University of Surrey's Research England, Global Challenge Research Fund
DOI : 10.1016/j.scs.2020.102090
Copyright Disclaimer : © 2020 Elsevier Ltd. All rights reserved.
Projects : Clean Air Engineering for Cities
Uncontrolled Keywords : Air pollutant concentrations; Particulate matter; Car commuters; Megacity Cairo; Egypt air pollution; CArE-cities project
Additional Information : This work is carried out under the framework of project- Clean Air Engineering for Cities (CArE-Cities) that is funded by the University of Surrey’s Research England funding under the Global Challenge Research Fund (GCRF) programme. The earlier Research England GCRF funding that was awarded to the Reducing the Impact of Health and Climate Emissions in Megacity Cairo (RETINA) project in 2017-18, has allowed this work to be implemented through the rental of needed equipment. We thank El-Nada Scientific Firm and the capable technical team who supported the researchers in data collection.
Depositing User : James Marshall
Date Deposited : 05 Feb 2020 13:15
Last Modified : 03 Mar 2020 09:55

Actions (login required)

View Item View Item


Downloads per month over past year

Information about this web site

© The University of Surrey, Guildford, Surrey, GU2 7XH, United Kingdom.
+44 (0)1483 300800