Spatial Variability of Volatile Organic Compound Concentrations in Sarnia, Ontario, Canada
Spatial Variability of Volatile Organic Compound Concentrations in Sarnia, Ontario, Canada
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DOI：
10.1080/15287390802706413
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发表时间：
2009-01-01
影响因子：
2.6
通讯作者：
Luginaah, Isaac
中科院分区：
文献类型：
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作者：
Miller, Lindsay;Xu, Xiaohong;Luginaah, Isaac
作为一项社区健康研究的一部分，在加拿大安大略省萨尼亚进行了一项空气质量调查，该地位于政府指定的关注区域内。萨尼亚地区，也被称为化学谷，一直以来存在大量空气质量问题，这些问题通常归因于该地区众多的化工企业，这些企业是加拿大主要空气污染物的最大工业排放源之一。2005年10月，在为期两周的时间里，使用3M有机蒸气监测仪对萨尼亚市37个地点的环境挥发性有机化合物（VOC）进行了监测。利用排序和绘图技术研究了空间变异性，以确定全市VOC的空间分布模式。结果显示，所研究的大多数VOC存在较大的空间变异性。此外，大多数VOC高度相关，表明在萨尼亚存在共同的排放源。结果还表明，工业和化工设施对萨尼亚VOC的浓度有强烈影响，靠近工业设施的地方室外VOC水平更高。对测量得到的VOC和从一个长期政府监测站获得的数据进行了比较。可以确定，研究期间观察到的暴露梯度相对能代表长期的模式。这项研究的结果将用于社区健康研究。
As part of a community health study, an air quality investigation was carried out in Sarnia, Ontario, Canada, which is located within a government-designated Area of Concern. The Sarnia area, also known as Chemical Valley, has been known to have an abundance of air quality problems that are frequently attributed to the large number of chemical companies located in the area, which are among the largest industrial sources of criteria air pollutants in Canada. Ambient volatile organic compounds (VOC) were monitored during a 2-wk period in October 2005 at 37 sites across the city of Sarnia, using 3M organic vapor monitors. The spatial variability was investigated using ranking and mapping techniques to identify spatial patterns of the VOC across the city. The results show a large spatial variability of most of the VOC investigated. Furthermore, most of the VOC were highly correlated, suggesting common sources in Sarnia. The results also indicate that the industrial and chemical facilities strongly influence the concentrations of VOC in Sarnia, with higher outdoor VOC levels found closer to industrial facilities. The measured VOC and those obtained from a long-term government monitoring station were compared. It was determined that the exposure gradients observed during the study period are relatively representative of the long-term pattern. The results of this study will be used for the community health study.