期刊
ATMOSPHERIC POLLUTION RESEARCH
卷 12, 期 3, 页码 13-24出版社
TURKISH NATL COMMITTEE AIR POLLUTION RES & CONTROL-TUNCAP
DOI: 10.1016/j.apr.2021.01.012
关键词
Biomass burning; Air pollution; PM2.5; Metals; Biomass ash; Forest fire
资金
- Thailand Research Fund (TRF), Area Based Collaborative (ABC) Research section [RDG58A0017]
- Thailand International Cooperation Agency (TICA)
- Chiang Mai University
- Thailand Science Research and Innovation (TSRI) [RDG6230005]
- Faculty of Science and Technology, Chiang Mai Rajabhat University
Emission factors of metals bound with PM2.5 from biomass burning were obtained through experiments, with significant emissions in Upper Northern Thailand in 2019 primarily from burning in forests and agricultural areas. The study also found that metals remained in the environment for a long time after burning.
Emission Factors (EFs) of metals bound with PM2.5 along with ashes from biomass burning were obtained using an open-system combustion chamber. The burning of agricultural residue (AR) (rice straw (RS) and maize residue (MR)) and forest leaf litter (FLL) collected from dry dipterocarp forests (DDF) and mixed deciduous forests (MDF) were performed. The EFs of PM2.5 of all biomass burning were 2.15-4.38 g kg(-1). The order of the EFs of PM2.5-bound metals were K, Na, Mg, Cr and Zn. The EFs values were used to estimate the emissions of PM2.5 and the metals from open burning in Upper Northern Thailand (UNT) in 2019. About 66,990 km(2) and 27,060 km(2) of the UNT are covered by forests and agriculture areas, respectively. In 2019, 80% of the total burned area was identified in forest areas (8,344 km(2)) and only 16% (1,647 km(2)) was identified in agriculture areas. Emissions of PM2.5 recorded during the smoke haze episode of 2019 were from burnings of forests (11 kilotons) and agricultural fields (0.4 kilotons). The major metals present in ash samples were Ca, K, Mg, Al, Fe and Mn. About 0.86 kilotons of total metals were emitted into the atmosphere. Ash resulting from the burning of AR was rich in K, while that of FLL has high in Ca content. After the burning period, about 78 kilotons of metals remained on the ground and/or were found to have accumulated in the environment.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据