在中国一个典型的工业城市使用先进的乙醇计模型来分配黑碳的来源
Xingxing Fan1, Sihang Ye2, Huang Zheng3
1Chinese Research Academy of Environmental Sciences, Beijing 100012, China; School of Environmental Science and Safety Engineering, Tianjin University of Technology, Tianjin 300380, China.
Journal of environmental sciences (China)
|October 31, 2024
概括
首次测量了中国齐博的黑碳 (BC) 污染,揭示了交通排放作为主要来源. 控制化石燃料的使用是减少BC的关键,冬季需要控制生物质燃烧.
科学领域:
- 大气科学 大气科学
- 环境科学 环境科学
- 空气质量研究 空气质量研究
背景情况:
- 黑碳 (BC) 气溶对健康构成重大风险,并导致气候变化.
- 确定BC源对于有效的减排战略至关重要.
- 齐博,一个典型的工业城市在中国北部,缺乏详细的BC源研究.
研究的目的:
- 在中国的齐博进行了首次相当黑碳 (eBC) 测量.
- 在城市工业环境中识别和量化导致BC度的来源.
- 为该地区的BC提供目标排放控制策略的信息.
主要方法:
- 使用七波长的乙醇计 (AE33) 进行一年的eBC测量 (2021年2月至2022年1月).
- 使用在线元素碳 (EC) 数据优化质量吸收截面 (MAC),以进行准确的eBC校正.
- 应用了一个受约束的乙醇计模型,包含离子数据,用于BC源的分配.
主要成果:
- 年度校正的BC度为1.72 ± 1.18μg/m3.
- BC度表现出双模日间模式,周末水平较低,这表明交通影响很大.
- 生物质燃烧对总体BC的贡献较小,但其相对影响在冬季增加,特别是在晚上的高峰期.
结论:
- 交通排放是齐博的BC的主要来源,需要控制化石燃料的燃烧.
- 虽然生物质燃烧是总体上很小的来源,但有针对性的冬季控制很重要.
- 这项研究为中国北部工业城市的空气质量管理提供了关键数据.
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