泰國清邁安康山偏遠大氣生質燃燒氣膠化學特徵研究

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Title:	泰國清邁安康山偏遠大氣生質燃燒氣膠化學特徵研究 Chemical Characterization of Biomass-Burning Particles in Remote air at Doi Ang Khang, Chiang Mai Province, Thailand
Authors:	Ritthipond Laitun
Contributors:	環境工程與科學系蔡瀛逸
Keywords:	粒徑分佈清邁左旋葡萄醣生質燃燒糖醇類 size distribution Chiang Mai levoglucosan biomass burning sugar alcohol
Date:	2015
Issue Date:	2015-10-21 17:07:36 (UTC+8)
Abstract:	Biomass burning is recognized as one of the major factors affecting the regional-to-global weather and climate. The aerosol samples in this study were collected at Doi Ang Khang, Chiang Mai, Thailand from 23 Feb.–7 April 2013, corresponding to the monsoonal dry season and a maximum in agricultural and forest fire activity, by using MOUDI and Nano MOUDI. Characteristics and provenance of anhydrosugars (levoglucosan, mannosan and galactosan), sugars (galactose, glucose and mannose), sugar alcohols (glycerol, erythritol, xylitol, mannitol, myo-inositol and arabitol) in aerosol were investigated. Levoglucosan, glucose and myo-inositol were the most dominant anhydrosugar, sugar, and sugar alcohol, respectively. The dominant concentration peaks occurred for levoglucosan, glucose and myo-inositol were in the size ranges of 0.1–2.5 μm, 0.5–1.0 μm, and 0.2–1.0 μm, respectively. High concentration of levoglucosan was found at nighttime. The levoglucosan/mannosan mass ratio reported in this study was 3.21. Levoglucosan was found to be the most useful marker for biomass burning emitted from forest fire event in the mountain around Chiang Mai. Principle component analysis showed an accordant result indicated photochemical products from biomass burning, biogenic activity and vehicles exhaust were mainly sources of PM at Doi Ang Khang, Chiang Mai, Thailand.
Relation:	校外公開：2018-07-31,校內公開：2015-09-11，學年度：103，102頁
Appears in Collections:	[Dept. of Environmental Engineering and Science (including master's program)] Dissertations and Theses

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