在卡尔斯巴德山洞国家公园的挥发性有机化合物的来源特征
Da Pan1, Ilana B Pollack1, Barkley C Sive2
1Department of Atmospheric Science, Colorado State University, Fort Collins, CO, USA.
Journal of the Air & Waste Management Association (1995)
|October 18, 2023
概括
来自石油和天然气活动的挥发性有机化合物 (VOC) 是影响卡尔斯巴德洞穴国家公园的臭氧前体的主要来源. 减少这些VOC排放对于减轻地面臭氧水平升高至关重要.
科学领域:
- 大气化学和空气质量研究.
- 环境科学和污染研究.
- 对工业对自然区域影响的地理空间分析.
背景情况:
- 卡尔斯巴德山洞国家公园 (CAVE) 面临地面水平臭氧 (O3) 的升高,超过国家环境空气质量标准 (NAAQS).
- 该公园靠近主要的石油和天然气 (O&G) 生产地区珀米亚盆地,这表明工业排放是潜在的来源.
- 臭氧前体,包括氧化 (NOx) 和挥发性有机化合物 (VOC),对于臭氧的形成至关重要.
研究的目的:
- 在2019年卡尔斯巴德洞穴空气质量研究 (CarCavAQS) 期间,确定和描述影响CAVE的VOC来源.
- 评估不同VOC来源对臭氧形成潜力的贡献.
- 了解VOC及其前体进入公园的运输途径.
主要方法:
- 特定的VOC测量使用正矩阵因数分解 (PMF) 进行分析.
- 居住时间分析 (RTA) 用于确定已识别的VOC来源的来源和运输.
- 计算了与基的VOC反应性,以评估臭氧形成潜力.
主要成果:
- 确定了七种不同的VOC来源因素.
- 三个由和芳香物主导的因素被归因于O&G的开发和生产,为VOC反应性贡献了62%.
- 二次VOC表明来自遥远的O&G地区的运输 (老福特,巴内特页岩),而则表明当地燃烧来源.
结论:
- 石油和天然气业务是影响CAVE的VOC的主要贡献者,导致臭氧水平升高.
- 来自珀米亚盆地的排放显著增加了主要物种,增强了当地的臭氧形成.
- 从上风页岩层和盆地运输的臭氧前体需要区域减排策略,特别是来自O&G活动的VOC.
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