在地面上转化飞机发动机排放的BTEX化合物
Jesús Rodríguez-Maroto1, Rosa Pérez-Pastor2, Susana García-Alonso2
1Centro de Investigaciones Energéticas Medioambientales y Tecnológicas (CIEMAT), 28040, Madrid, Spain. jesus.maroto@ciemat.es.
Environmental science and pollution research international
|December 2, 2025
概括
机场的地面操作显著排放挥发性有机化合物 (VOC),包括,,乙烯和烯 (BTEX). 这些排放有助于二次有机气溶 (SOA),并且由于空中交通增长,需要控制.
科学领域:
- 环境化学环境化学
- 大气科学 大气科学
- 航空污染 航空污染
背景情况:
- 挥发性有机化合物 (VOCs),特别是,,乙烯和烯 (BTEX),是由航空活动排放的.
- 这些BTEX化合物是二次有机气溶 (SOA) 的前体,并对健康构成风险.
- 由于预计的空中交通增加,预测和控制这些排放是至关重要的.
研究的目的:
- 研究飞机发动机和机场环境空气中BTEX的排放,演变和转化.
- 确定导致BTEX排放的关键机场运营阶段.
- 了解BTEX在机场环境中SOA形成中的作用.
主要方法:
- 在吸附剂管中收集的气体样本,并使用气体染色学/质谱学 (GC/MS) 进行分析.
- 在过器上收集的颗粒物 (PM) 用各种样本 (大容量,冲击器,自动化) 进行重力测量分析.
- 采样在飞机发动机试验室和两个主要机场 (皇家城和马德里-巴拉哈斯) 进行.
主要成果:
- 地面空配置 (模拟行驶) 被确定为一个关键的BTEX排放源,超过460 ng L-1.1.
- 在比烯更高的度下始终被排放,排放量随着发动机加速而增加.
- 由于空气稀释,BTEX度和占主导地位在中减少,这表明可能转化为SOA.
结论:
- 机场地面运营,特别是驾驶,是BTEX排放的重要来源.
- 是BTEX的主要组成部分,在地面作业期间排放.
- 环境因素和PM度可能会影响BTEX转化为二次有机气溶 (SOA).
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