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首页> 外文期刊>Environmental Science and Pollution Research >Levels, potential sources and human health risk of polycyclic aromatic hydrocarbons (PAHs) in particulate matter (PM10) in Kumasi, Ghana
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Levels, potential sources and human health risk of polycyclic aromatic hydrocarbons (PAHs) in particulate matter (PM10) in Kumasi, Ghana

机译：加纳库马西颗粒物（PM10）中多环芳烃（PAHs）的水平，潜在来源和人类健康风险

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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 32 air samples were collected in Kwame Nkrumah University of Science and Technology (KNUST) campus (pristine site) and city centre (CC). Samples were extracted with 1:2v/v acetone/hexane mixture prior to GC-MS analyses. The sum of concentrations of 17 PAHs in air ranged from 0.51 to 16 (KNUST) and 19-38 ng/m(3) (CC). The concentration of benzo[a]pyrene, BaP, ranged from below detection limit to 0.08 ng/m(3) (KNUST) and 1.6 to 5.6 ng/m(3) (CC). Chemical mass balance model showed that PAHs in air in Kumasi were mainly from fuel combustion. The total BaP equivalent concentration (BaPeq) in CC was 18 times higher compared to KNUST; based on the European Legislation and Swedish and UK 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 PAH contributor in CC (70 %). Health risk to adults and children associated with PAH 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.
机译：在石英过滤器上收集了空气中的微粒样本，以确定加纳库马西空气中多环芳烃（PAHs）的浓度，来源和健康风险。在夸梅·恩克鲁玛科技大学（KNUST）校园（原始站点）和市中心（CC）总共收集了32个空气样本。在进行GC-MS分析之前，用1：2v / v丙酮/己烷混合物萃取样品。空气中17种PAHs的总浓度范围为0.51至16（KNUST）和19-38 ng / m（3）（CC）。苯并[a] re BaP的浓度范围从检测限以下至0.08 ng / m（3）（KNUST）和1.6至5.6 ng / m（3）（CC）。化学物质平衡模型表明，库马西空气中的多环芳烃主要来自燃料燃烧。 CC中的总BaP当量浓度（BaPeq）是KNUST的18倍;根据欧洲立法以及瑞典和英国关于空气中BaP的标准，CC可以归类为高度污染。根据BaPeq估算的PAHs致癌性表明，BaP是CC中PAH的主要贡献者（70％）。通过考虑终生平均日剂量和相应的终生终生癌症风险（ILCR）评估与吸入PAH相关的成人和儿童的健康风险。 ILCR在可接受的范围内（10（-6）至10（-4）），表明居民的健康风险较低。

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