首页|Daytime-nighttime variations in the concentration of PM0.1 carbonaceous particles during a biomass fire episode in Chiang Mai,Thailand

Daytime-nighttime variations in the concentration of PM0.1 carbonaceous particles during a biomass fire episode in Chiang Mai,Thailand

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Carbonaceous aerosols affect air quality adversely,affect global warming,and human health.However,our understanding of the impact of ultrafine(PM0.1)carbonaceous particulate matter is incomplete,particularly the effects during haze episodes.This study monitored diurnal variations in PM0.1 in Chiang Mai,Thailand,from March to April 2020.We investigated carbonaceous PM0.1 collected by an ambient nano-sampler and evaluated their effect by using a carbon analyzer(IMPROVE_TOR).The results showed that burning large open areas in the dry season was crucial for increasing the particle mass concentration because of the large open burnings that occurred in this area.The majority of biomass fires near the sampling site occurred during the night,which would allow more particles to be released thus resulting in higher concentrations of PM0.1.Hence,the release of PM0.1 during the night would obviously result in higher concentrations than that during the day.In the eight carbon profiles,organic carbon 3(OC3)was predicted to be a marker of biomass fires.The carbon indices displayed that PM0.1 was influenced by biomass burning both daytime and nighttime.The findings reported herein should be of great impor-tance in terms of establishing biomass burning control policies for mitigating heavy haze pollution in Thailand and elsewhere.

Biomass burningCarbonForest firesNanoparticlesUltrafine particles

Worradorn Phairuang、Thaneeya Chetiyanukornkul、Phuchiwan Suriyawong、Sotasing Ho、Phakphum Paluang、Masami Furuuchi、Muhammand Amin、Mitsuhiko Hata

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Faculty of Geosciences and Civil Engineering,Institute of Science and Engineering,Kanazawa University,Kanazawa,Ishikawa,920-1192,Japan

Department of Geography,Faculty of Social Sciences,Chiang Mai University,Muang,Chiang Mai 50200,Thailand

Department of Biology,Faculty of Science,Chiang Mai University,Muang,Chiang Mai,50200,Thailand

Research Unit for Energy Economics and Ecological Management,Multidisciplinary Research Institute,Chiang Mai University,Chiang Mai,50200,Thailand

Management and Development Training Program Office,National Institute of Science,Technology and Innovation,120601,Cambodia

Faculty of Engineering,Maritim University of Raja Ali Haji,Tanjung Pinang,Kepulauan Riau,29115,Indonesia

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Office of the Permanent Secretary,Ministry of Higher Education,Science,Research and Innovation,ThailandJICA-JST SATREPSJSPS KAKENHI

RGNS 63-253JPMJSA210221H03618

2024

10.1016/j.partic.2023.09.013

颗粒学报(英文版)
中国颗粒学会　中国科学院过程工程研究所

颗粒学报(英文版)

CSTPCD
影响因子：0.632
ISSN：1674-2001
年,卷(期)：2024.87(4)
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