在近乎真实的大气条件下,老化对住宅生物质燃烧排放的影响
Siyuan Li1, Dantong Liu1, Yangzhou Wu1
1Department of Atmospheric Sciences, School of Earth Sciences, Zhejiang University, Hangzhou, China.
生物质燃烧的排放通过大气老化形成二次有机气溶 (SOA). 光化学老化显著增加SOA的形成相比暗老化,影响空气质量.
科学领域:
- 大气化学 大气化学
- 环境科学 环境科学
- 空气质量研究 空气质量研究
背景情况:
- 生物质燃烧 (BB) 是大气微量气体和微粒的主要来源.
- 排放的有机气溶 (OA) 的化学演变显著改变了空气质量和人类健康的影响.
研究的目的:
- 研究初级有机气溶 (POA) 和二次有机气溶 (SOA) 的多相氧化过程.
- 了解不同条件下的住宅生物质燃烧羽毛的老化过程.
主要方法:
- 利用一个近乎真实的大气雾系统进行衰老实验.
- 在生物质燃烧羽毛上进行光化学和暗衰老实验.
主要成果:
- 光化学衰老由于气态前体氧化 (,,碳烯) 的SOA形成翻了一番.
- 暗色衰老导致OA质量增强1.2倍,氧化程度较低.
- 含的化合物在深色衰老中形成;碳氧酸在光化学衰老中增加.
结论:
- 阳光辐射和氧化剂 (OH,NO3基) 显著影响SOA的特性.
- 生物质燃烧羽毛的衰老过程是复杂的,并取决于环境条件.
- 考虑各种衰老机制对于准确的大气建模至关重要.
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