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首页> 外文期刊>Environmental Science & Technology >First Results from the Oil Sands Passive Air Monitoring Network for Polycyclic Aromatic Compounds
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First Results from the Oil Sands Passive Air Monitoring Network for Polycyclic Aromatic Compounds

机译：油砂被动空气监测网络对多环芳烃化合物的初步研究结果

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Results are reported from an ongoing passive air monitoring study for polycyclic aromatic compounds (PACs) in the Athabasca oil sands region in Alberta, Canada. Polyurethane foam (PUF) disk passive air samplers were deployed for consecutive 2-month periods from November 2010 to June 2012 at 17 sites. Samples were analyzed for polycyclic aromatic hydrocarbons (PAHs), alkylated PAHs, dibenzothiophene and its alkylated derivatives (DBTs). Relative to parent PAHs, alkylated PAHs and DBTs are enriched in bitumen and therefore considered to be petrogenic markers. Concentrations in air were in the range 0.03-210 ng/m~3, 0.15-230 ng/m~3 and 0.01-61 ng/m~3 for ΣPAHs, Σalkylated PAHs and ΣDBTs, respectively. An exponential decline of the PAC concentrations in air with distance from mining areas and related petrogenic sources was observed. The most significant exponential declines were for the alkylated PAHs and DBTs and attributed to their association with mining-related emissions and near-source deposition, due to their lower volatility and greater association with depositing particles. Seasonal trends in concentrations in air for PACs were not observed for any of the compound classes. However, a forest fire episode during April to July 2011 resulted in greatly elevated PAH levels at all passive sampling locations. AlkyUted PAHs and DBTs were not elevated during the forest fire period, supporting their association with petrogenic sources. Based on the results of this study, an "Athabasca PAC profile" is proposed as a potential source marker for the oil sands region. The profile is characterized by ΣPAHs/ΣAlkylated PAHs = ～0.2 and ΣPAHs/ΣDBTs = ～5.
机译：一项正在进行的被动空气监测研究报告了结果，该研究针对加拿大艾伯塔省阿萨巴斯卡油砂地区的多环芳族化合物（PAC）。从2010年11月到2012年6月，在17个地点连续两个月部署了聚氨酯泡沫（PUF）盘式被动空气采样器。分析了样品中的多环芳烃（PAH），烷基化的PAH，二苯并噻吩及其烷基化的衍生物（DBT）。相对于母体PAH，烷基化的PAH和DBT富含沥青，因此被认为是成岩标志物。对于ΣPAH，Σ烷基化PAH和ΣDBT，空气中的浓度分别为0.03-210 ng / m〜3、0.15-230 ng / m〜3和0.01-61 ng / m〜3。观察到空气中PAC浓度随距矿区和相关成岩源的距离呈指数下降。烷基化的PAHs和DBTs的指数下降幅度最大，归因于它们的挥发性较低，与沉积颗粒的关联性更大，与采矿相关的排放和近源沉积有关。对于任何化合物类别，均未观察到PAC中空气中浓度的季节性趋势。但是，2011年4月至2011年7月发生的森林大火导致所有被动采样地点的PAH水平大大升高。在森林火灾期间，烷基化的PAHs和DBTs并未升高，支持了它们与成岩源的联系。根据这项研究的结果，提出了“阿萨巴斯卡PAC剖面”作为油砂地区的潜在来源标志。该曲线的特征是ΣPAHs/Σ烷基化PAHs =〜0.2和ΣPAHs/ΣDBTs=〜5。

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  • 来源
    《Environmental Science & Technology》 |2015年第5期|2991-2998|共8页
  • 作者

    Jasmin K. Schuster; Tom Harner; Ky Su; Cristian Mihele; Anita Eng;

  • 作者单位

    Air Quality Processes Research Section, Environment Canada, Toronto, Ontario M3H 5T4, Canada;

    Air Quality Processes Research Section, Environment Canada, Toronto, Ontario M3H 5T4, Canada;

    Air Quality Processes Research Section, Environment Canada, Toronto, Ontario M3H 5T4, Canada;

    Air Quality Processes Research Section, Environment Canada, Toronto, Ontario M3H 5T4, Canada;

    Air Quality Processes Research Section, Environment Canada, Toronto, Ontario M3H 5T4, Canada;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
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