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Please use this identifier to cite or link to this item: http://hdl.handle.net/123456789/12417

Title: Levels, potential sources and human health risk of polycyclic aromatic hydrocarbons (PAHs) in particulate matter (PM10) in Kumasi–Ghana
Authors: Bortey-Sam, Nesta
Ikenaka, Yoshinori
Akoto, Osei
Nakayama, Shouta M.M.
Yohannes, Yared Beyene
et. al
Keywords: Airborne particulate;
PAHs;
Kumasi;
BaP toxic equivalent;
Incremental lifetime cancer risk;
Chemical mass balance
Issue Date: 1-Jul-2015
Publisher: Springer Berlin Heidelberg
Abstract: Airborne particulate samples were collected on quartz filters to determine the concentrations, sources and health risks of polycyclic aromatic hydrocarbons (PAHs) in air in Kumasi, Ghana. A total of thirty two air samples were collected in Kwame Nkrumah University of Science and Technology campus (KNUST) (pristine site) and city centre (CC). Samples were extracted with 1:2 v/v acetone:hexane mixture prior to GC–MS analyses. The sum of concentrations of 17 PAHs in air ranged from 0.51–16 (KNUST) and 19–38 ng/m3 (CC). The concentration of Benzo[a]Pyrene, BaP, ranged from below detection limit to 0.08 ng/m3 (KNUST) and 1.6 to 5.6 ng/m3 (CC). Chemical mass balance model showed that PAHs in air in Kumasi were mainly from fuel combustion. The total BaP toxic equivalent concentration (BaPeq) in CC was 18 times higher compared to KNUST; based on the European Legislation, Swedish and United Kingdom Standards for BaP in air, CC could be classified as highly polluted. Estimated carcinogenicity of PAHs in terms of BaPeq indicated that BaP was the principal PAHs contributor in CC (70%). Health risk of adults and children associated to PAHs inhalation was assessed by taking into account the lifetime average daily dose and corresponding incremental lifetime cancer risk (ILCR). The ILCR was within the acceptable range (10–6 to 10–4) indicating low health risk to residents.
Description: An article published by Springer Berlin Heidelberg
URI: http://hdl.handle.net/123456789/12417
Appears in Collections:College of Science

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