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开发和应用一种新的方法来量化阿尔伯塔省油砂地区大气中总硫的含量

Cristian Mihele¹, Jeffrey R Brook², Gang Lu¹

¹Air Quality Process Research Section, Air Quality Research Division, Environment and Climate Change Canada, Toronto, ON, Canada.

Journal of the Air & Waste Management Association (1995)

|December 11, 2024

概括

一种新的方法准确地测量了总硫 (TS),揭示了传统技术低估了硫化合物的20%. 这项研究量化了二氧化硫 (SO2),硫化 (H2S) 和硫酸盐的含量,这对于工业场所附近的空气质量监测至关重要.

科学领域:

环境化学环境化学
大气科学大气科学
空气质量监测空气质量监测

背景情况:

持续的环境硫测量对于评估工业和自然来源附近的空气质量至关重要.
测量总减少硫 (TRS) 的现有方法可能会带来偏差,阻碍对硫化合物影响的准确评估.
监管机构正在建立基于气味和健康影响的TRS空气质量标准.

研究的目的:

提出和验证一种用于量化总硫 (TS) 度的新方法.
调查气味事件并构建详细的硫预算,包括二氧化硫 (SO2),颗粒硫酸盐,硫化 (H2S) 和其他减少的硫化合物 (RSC).
评估传统TRS监控技术中的潜在偏差.

主要方法:

开发和多年测试 (2013-2017年) 在阿尔伯塔省油砂地区麦凯堡的奥斯基-奥丁工厂的新TS量化方法.
将新型TS数据与现有的SO2和来自附近长期监测站点的传统TRS测量数据进行比较.
分析硫的特异化,包括SO2,颗粒硫酸盐和TRS (H2S和非H2SRS).

主要成果:

与新TS方法相比,传统的TRS监测方法被发现偏差低,平均为20%.
在麦凯堡,SO2约占总硫质量的40%,TRS占50%,硫酸颗粒占10%.
在冬季,TRS在硫质量分布中占主导地位,而由于垂直混合有限,SO2雾仍然很高.

结论:

开发的方法提供了更准确的总硫量的量化,解决了标准测量技术的局限性.
标准方法显著低估了总硫度,特别是在阿尔伯塔石油沙等地区.
了解硫化合物 (SO2,TRS,硫酸盐) 的物种化对于有效的空气质量管理和气味事件调查至关重要.

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