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首页> 外文期刊>Environmental Science & Technology >Deposition and Source Identification of Nitrogen Heterocyclic Polycyclic Aromatic Compounds in Snow, Sediment, and Air Samples from the Athabasca Oil Sands Region
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Deposition and Source Identification of Nitrogen Heterocyclic Polycyclic Aromatic Compounds in Snow, Sediment, and Air Samples from the Athabasca Oil Sands Region

机译：阿萨巴斯卡油砂地区的雪，沉积物和空气样品中氮杂环多环芳族化合物的沉积和来源鉴定

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摘要

Polycyclic aromatic compounds (PACs) can have multiple sources in the Athabasca Oil Sands Region (AOSR). The current study was designed to identify and explore the potential of nitrogen heterocyclic PACs (NPACs) as source indicators in snowpack, lake sediment and passive air samples from the AOSR during 2014-2015. Source samples including petroleum coke (petcoke), haul road dust, and unprocessed oil sands were also analyzed. Samples were analyzed using comprehensive two-dimensional gas chromatography time-of-flight mass spectrometry, and liquid chromatography-high resolution Orbitrap mass spectrometry. Over 200 NPACs were identified and classified into at least 24 isomer groups, including alkylated carbazoles, benzocarbazoles, and indenoquinolines. Levels of NPACs in environmental samples decreased with distance from the main developments and with increasing depth in lake sediments but were detected within 50 km from the major developments. The composition profiles of several NPAC isomer classes, such as dimethylcarbazoles, showed that petcoke had a distinct distribution of NPACs compared to the haul road dust and unprocessed oil sands ores and was the most similar source material to near-field environmental samples. These results suggest that petcoke is a major contributing source for the identified NPACs and that these compounds have the potential to be used as source indicators for future research in the AOSR.
机译：多环芳族化合物（PAC）在阿萨巴斯卡油砂地区（AOSR）中可能有多种来源。当前的研究旨在识别和探索氮杂环PAC（NPAC）作为2014-2015年AOSR的积雪，湖泊沉积物和被动空气样本中的源指标的潜力。还分析了包括石油焦（石油焦），运输道路扬尘和未加工的油砂在内的原始样品。使用全面的二维气相色谱飞行时间质谱和液相色谱-高分辨率Orbitrap质谱分析样品。已鉴定出200多种NPAC，并将其分为至少24个异构体组，包括烷基化咔唑，苯并咔唑和茚并喹啉。环境样品中NPAC的水平随距主要开发区的距离以及湖泊沉积物深度的增加而降低，但在距主要开发区50公里以内被检测到。几种NPAC异构体类别（例如二甲基咔唑）的组成特征表明，与拖运道路扬尘和未加工的油砂矿石相比，石油焦具有明显的NPAC分布，并且是与近场环境样品最相似的原料。这些结果表明，石油焦是已鉴定NPAC的主要来源，并且这些化合物有潜力用作AOSR未来研究的来源指标。

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  • 来源
    《Environmental Science & Technology》 |2019年第6期|2981-2989|共9页
  • 作者

    Chibwe Leah; Manzano Carlos A.; Muir Derek; Atkinson Beau; Kirk Jane L.; Marvin Christopher H.; Wang Xiaowa; Teixeira Camilla; Shang Dayue; Harner Tom; De Silva Amila O.;

  • 作者单位

    Environm & Climate Change Canada, Aquat Contaminants Res Div, Burlington, ON L7S 1A1, Canada;

    Univ Chile, Fac Sci, Ctr Environm Sci, Santiago 7800003, Chile|San Diego State Univ, Sch Publ Hlth, San Diego, CA 92182 USA;

    Environm & Climate Change Canada, Aquat Contaminants Res Div, Burlington, ON L7S 1A1, Canada;

    Environm & Climate Change Canada, Aquat Contaminants Res Div, Burlington, ON L7S 1A1, Canada;

    Environm & Climate Change Canada, Aquat Contaminants Res Div, Burlington, ON L7S 1A1, Canada;

    Environm & Climate Change Canada, Aquat Contaminants Res Div, Burlington, ON L7S 1A1, Canada;

    Environm & Climate Change Canada, Aquat Contaminants Res Div, Burlington, ON L7S 1A1, Canada;

    Environm & Climate Change Canada, Aquat Contaminants Res Div, Burlington, ON L7S 1A1, Canada;

    Environm & Climate Change Canada, Pacific & Yukon Lab Environm Testing, N Vancouver, BC V7H 1B1, Canada;

    Environm & Climate Change Canada, Air Qual Proc Res Div, Toronto, ON M3H 5T4, Canada;

    Environm & Climate Change Canada, Aquat Contaminants Res Div, Burlington, ON L7S 1A1, 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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