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首页> 外文期刊>Environmental Science & Technology >Polycyclic Aromatic Hydrocarbons Increase in Athabasca River Delta Sediment: Temporal Trends and Environmental Correlates
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Polycyclic Aromatic Hydrocarbons Increase in Athabasca River Delta Sediment: Temporal Trends and Environmental Correlates

机译：阿萨巴斯卡河三角洲沉积物中多环芳烃的增加：时间趋势和环境相关性。

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摘要

The Athabasca River in Alberta, Canada, flows north through an area undergoing extensive bitumen resource extraction and processing before discharging its water and sediments into the Athabasca Delta and Lake Athabasca. Polycyclic aromatic hydrocarbons (PAHs) have been identified as an environmental concern in the region. We analyzed environmental data collected by the Regional Aquatics Monitoring Program and government agencies to determine whether temporal trends exist in the concentration of sediment PAHs in the Athabasca River Delta. We then determined what environmental factors related to the trends in sediment PAH concentrations. Total PAH concentrations in the sediment of the Athabasca River Delta increased between 1999 and 2009 at a rate of 0.05 mg/kg/yr ± 0.02 s.e. Annual bitumen production and mined sand volume, extent of landscape disturbance, and particulate emissions were correlated with sediment PAH concentrations as were total organic carbon in sediment and discharge of the Clearwater River, a major tributary of the Athabasca River. Within four tributaries of the Athabasca River, only the Clearwater River showed a significant correlation between discharge and sediment PAH concentration at their river mouths. Carefully designed studies are required to further investigate which factors best explain variability in sediment PAH concentrations.
机译：加拿大艾伯塔省的阿萨巴斯卡河向北流经广泛的沥青资源开采和加工地区，然后将其水和沉积物排入阿萨巴斯卡三角洲和阿萨巴斯卡湖。多环芳烃（PAH）已被确定为该地区的环境问题。我们分析了由区域水产监测计划和政府机构收集的环境数据，以确定阿萨巴斯卡河三角洲沉积物中多环芳烃的浓度是否存在时间趋势。然后，我们确定了哪些环境因素与沉积物中PAH浓度的趋势有关。在1999年至2009年之间，阿萨巴斯卡河三角洲沉积物中的PAH总浓度以0.05 mg / kg / yr±0.02 s.e.的速率增加。每年的沥青产量和开采的沙量，景观扰动的程度以及颗粒物的排放与底泥PAH浓度相关，而阿萨巴斯卡河的主要支流克利尔沃特河的底泥和排放物中的总有机碳也是如此。在阿萨巴斯卡河的四个支流中，只有克利尔沃特河在其河口处的排放量和沉积物PAH浓度之间显示出显着的相关性。需要精心设计的研究来进一步研究哪些因素可以最好地解释沉积物中PAH浓度的变化。

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  • 来源
    《Environmental Science & Technology》 |2011年第10期|p.4278-4284|共7页
  • 作者

    Kevin P. Timoney; Peter Lee;

  • 作者单位

    Treeline Ecological Research, 21551 Twp Road 520, Sherwood Park, Alberta T8E 1E3, Canada, and Global Forest Watch Canada,10337 146 Street, Edmonton, Alberta T5N 3A3, Canada;

    Treeline Ecological Research, 21551 Twp Road 520, Sherwood Park, Alberta T8E 1E3, Canada, and Global Forest Watch Canada,10337 146 Street, Edmonton, Alberta T5N 3A3, 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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