• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Atmospheric environment >Assessing the effects of oil sands related ozone precursor emissions on ambient ozone levels in the Alberta oil sands region, Canada
【24h】

Assessing the effects of oil sands related ozone precursor emissions on ambient ozone levels in the Alberta oil sands region, Canada

机译：评估加拿大艾伯塔省油砂地区与油砂有关的臭氧前体排放物对环境臭氧水平的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A study was undertaken to determine whether, and the extent to which, increased ground-level ozone (O-3) precursor emissions from oil sands development have impacted ambient air quality in the northeastern Alberta, Canada, over the period 1998 to 2012. Temporal trends in emissions of O-3 precursors (NOx and VOC) and ambient air concentrations of O-3 precursors, and O-3 were examined using the TheilSen statistical analysis method. Statistically significant correlations between NOx emissions and ambient NOx concentrations were found mainly near surface (open-pit) mining areas where mine fleets are a large source of NOx emissions. No statistically significant trends in the 4th highest daily maximum 8-hr average O-3 at any of the continuous and passive ambient air monitoring stations were found. A significant long-term decrease in monthly averaged O-3 is observed at some ambient monitoring sites in summer. A visual examination of long-term variations in annual NOx and VOC emissions and annual 4th highest daily maximum 8-hr O-3 concentrations does not reveal any indication of a correlation between O-3 concentrations and O-3 precursor emissions or ambient levels in the study area. Despite a significant increase in oil sands NOx emissions (8%/yr), there is no statistically significant increase in long-term O-3 concentrations at any of monitoring stations considered. This suggests that there is surplus NOx available in the environment which results in a titration of ambient O-3 in the areas that have ambient monitoring. The limited ambient O-3 monitoring data distant from NOx emission sources makes it impossible to assess the impact of these increased O-3 precursor levels on O-3 levels on a regional scale. As a precautionary measure, the increasing oil sands development O-3 precursor emissions would require that priority be given to the management of these emissions to prevent possible future O-3 ambient air quality issues. (C) 2017 Elsevier Ltd. All rights reserved.
机译：进行了一项研究，以确定在1998年至2012年期间，油砂开发增加的地面臭氧（O-3）前体排放量是否增加以及在多大程度上影响了加拿大东北艾伯塔省的环境空气质量。使用TheilSen统计分析方法检查了O-3前体（NOx和VOC）的排放趋势以及O-3前体和O-3的环境空气浓度。在NOx排放量与周围NOx浓度之间的统计上显着的相关性主要发现在露天矿区（矿山是NOx排放的主要来源）附近。在任何连续和被动环境空气监测站中，第四最高每日最大8小时平均O-3都没有发现统计学上的显着趋势。在夏季的某些环境监测点，每月平均O-3值会出现长期的大幅下降。目视检查年度NOx和VOC排放量的长期变化以及年度第4高的每日最大8小时O-3浓度，并没有发现O-3浓度与O-3前体排放量或环境水平之间的相关性的任何迹象。学习区。尽管油砂NOx排放量显着增加（每年8％），但在所考虑的任何监测站中，长期O-3浓度在统计上均没有显着增加。这表明环境中存在可用的过量NOx，这会导致在具有环境监控区域的环境O-3滴定。远离NOx排放源的有限的环境O-3监测数据使得无法在区域范围内评估这些增加的O-3前体水平对O-3水平的影响。作为预防措施，油砂开发O-3前驱物排放量的增加将要求优先处理这些排放物，以防止将来可能发生O-3环境空气质量问题。 （C）2017 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号