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首页> 外文期刊>Atmospheric environment >Ambient nitrogen dioxide and sulfur dioxide concentrations over a region of natural gas production, Northeastern British Columbia, Canada
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Ambient nitrogen dioxide and sulfur dioxide concentrations over a region of natural gas production, Northeastern British Columbia, Canada

机译：加拿大不列颠哥伦比亚省东北部天然气生产区域中的环境二氧化氮和二氧化硫浓度

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The Peace River district of Northeastern British Columbia, Canada is a region of natural gas production that has undergone rapid expansion since 2005. In order to assess air quality implications, Willems badge passive diffusive samplers were deployed for six two-week exposure periods between August and November 2013, at 24 sites across the region to assess the ambient concentration of nitrogen dioxide (NO2) and sulfur dioxide (SO2). The highest concentrations of both species (NO2: 9.1 ppb, SO2: 1.91 ppb) during the whole study period (except the 1st exposure period), were observed in Taylor (Site 14), which is consistent with its location near major industrial sources. Emissions from industrial activities, and their interaction with meteorology and topography, result in variations in atmospheric dispersion that can increase air pollution concentrations in Taylor. However, relatively high concentrations of NO2 were also observed near the center of Chetwynd (site F20), indicating the importance of urban emissions sources in the region as well. Observations of both species from the other study sites document the spatial variability and show relatively high concentrations near Fort St. John and Dawson Creek, where unconventional oil and gas development activities are quite high. Although a few sites in Northeastern British Columbia recorded elevated concentrations of NO2 and SO2 during this investigation, the concentrations over the three-month period were well below provincial annual ambient air quality objectives. Nonetheless, given the limited observations in the region, and the accelerated importance of unconventional oil and gas extraction in meeting energy demands, it is imperative that monitoring networks are established to further assess the potential for elevated ambient concentrations associated with industrial emissions sources in the Peace River region. (C) 2016 Elsevier Ltd. All rights reserved.
机译：自2005年以来，加拿大不列颠哥伦比亚省东北部的Peace River区一直在快速发展。为了评估空气质量的影响，Willems徽章无源扩散采样器在8月至2006年期间部署了六个为期两周的暴露期。 2013年11月，在该地区的24个站点上评估了二氧化氮（NO2）和二氧化硫（SO2）的环境浓度。在整个研究期间（第一次暴露期除外），两种物种的最高浓度（NO2：9.1 ppb，SO2：1.91 ppb）在泰勒（第14站点）中观察到，这与主要工业来源附近的位置一致。工业活动的排放及其与气象和地形的相互作用，导致大气扩散的变化，从而可能增加泰勒地区的空气污染浓度。但是，在Chetwynd中心（F20站点）附近也观察到较高浓度的NO2，这也表明该地区城市排放源也很重要。来自其他研究地点的两种物种的观测结果证明了空间变异性，并显示了圣约翰堡和道森克里克附近的相对较高的浓度，那里的非常规油气开发活动非常多。尽管在本次调查中，不列颠哥伦比亚省东北部的一些站点记录到NO2和SO2浓度升高，但三个月内的浓度仍远低于省年度环境空气质量目标。但是，鉴于该地区的观察力有限，以及非常规油气开采在满足能源需求方面的重要性日益提高，必须建立监测网络以进一步评估《和平》中与工业排放源相关的环境浓度升高的潜力河流地区。 （C）2016 Elsevier Ltd.保留所有权利。

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