Secondary Organic Aerosol Formations from the Emissions of Biomass Burning

• Main Authors: Yu-Hsuan Lai, 賴俞璇
• Other Authors: Chia-Wei Lee
• Format: Others
• Language: zh-TW
• Published: 2012
• Online Access: http://ndltd.ncl.edu.tw/handle/88508353104191132711

碩士 === 國立高雄第一科技大學 === 環境與安全衛生工程研究所 === 100 === Joss paper burning is prevalent in Taiwan. The process of this biomass burning produces numerous volatile organic compounds (VOCs), such as benzene, toluene, and ethylbenzene. Few studies have discussed the formations of SOA by photochemical reactions of gaseous products from joss paper burning. In this study, series photochemical reactions were conducted in a smog chamber to understand the characteristics of SOA formed by filtered gaseous products collected from two types of burning conditions (flaming and smoldering). The effect of light intensity on the SOA formations was also examined. The results showed that the compositions of gaseous products from two types of burning were similar. The effects of light intensity on the oxidation rates of the major VOCs precursors in the smog chamber were not significant under our chamber settings. The shorter elapsed time of SOA nucleation was observed under higher light intensity. The size of SOA formation from the emissions of joss paper burning ranged from 20 to 80 nm.