Effects of VOCs from fuel loading activities and traffic area on urban risk of residents and workers

Journal article

Authors/Editors

SIRINTORNTHEP TOWPRAYOON

Strategic Research Themes

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Publication Details

Author list: Keprasertsup C., Adsavakulchai S., Towprayoon S.

Publication year: 2018

Journal: RESEARCH JOURNAL OF CHEMISTRY AND ENVIRONMENT (0972-0626)

Volume number: 22

Issue number: 6

Start page: 23

End page: 35

Number of pages: 13

ISSN: 0972-0626

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047532960&partnerID=40&md5=e85a1ca2947053b11a1e35368d685593

Languages: English-Great Britain (EN-GB)

Abstract

Air concentrations of MTBE and BTEX in service stations, traffic areas and public parks in Bangkok area were monitored and assessed for their health risk to Thai population. Pump-islands in high sale stations were the areas of highest contamination for MTBE and BTEX. The stop junctions were more contaminated with MTBE and BTEX than the non-stop junctions. MTBE concentrations at the pump-islands were the highest for all of the VOCs while toluene was the highest concentrated VOCs member at the perimeters of the stations and traffic areas. MTBE and benzene contamination in service stations were primarily due to evaporative emissions during refuelling, rather than to vehicle exhaust emissions. Traffic areas were contaminated mostly with toluene, ethyl benzene and xylenes emitted from vehicle exhausts and they were influenced clearly by traffic speed as well as traffic density. Multiple chronic risks to MTBE and BTEX of residents (at stop junctions and perimeter zone of the high sale-stations and that of workers at pump-island zone of high sale-stations) were high to induce adverse symptoms for very long exposure. Multiple acute risks of MTBE and BTEX in all studied areas were of low value not to induce health effects. For carcinogenic risks to benzene, occupational risk at pump-islands of high sale stations (∼2.5×10-4) and resident risks at ST-junction (∼1.5×10-4) and perimeter areas of high sale stations (∼2.0×10-4) were excess for the least health protective end of the risk range (1×10-4). © 2018 World Research Association. All rights reserved.

Keywords

Carcinogenic risk, Health risk assessment, MTBE