The influence of the open burning of agricultural biomass and forest fires in Thailand on the carbonaceous components in size-fractionated particles
The influence of the open burning of agricultural biomass and forest fires in Thailand on the carbonaceous components in size-fractionated particles
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DOI：
10.1016/j.envpol.2019.01.001
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发表时间：
2019-04-01
影响因子：
8.9
通讯作者：
Furuuchi, Masami
中科院分区：
文献类型：
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作者：
Phairuang, Worradorn;Suwattiga, Panwadee;Furuuchi, Masami
2014-2015年，在泰国曼谷和清迈两个城市，使用PM0.1级的梯级空气采样器收集了大小分离的环境颗粒，颗粒小于0.1 μ m （PM0.1）。基于热/光反射率（IMPROVE_TOR）方法评价了它们的特征和季节行为。为了调查泰国农业活动、森林火灾和涉农工业对排放源和黑碳（BC）浓度的贡献，使用浓度计评估了其诊断指标，并与颗粒结合的BC和有机碳（OC）的月度排放清单（El）相关。每月省级生态指数的评估依据是与田间秸秆燃烧和农用秸秆用作燃料相对应的农作物产量，以及与森林火灾燃烧地区相对应的卫星图像热点数量。在粒径范围内，描述生物质燃烧对柴油排放相对影响的炭- ec /烟灰- ec比值与生物质燃烧产生的BC的El值一致
Size-segregated ambient particles down to particles smaller than 0.1 mu m (PM0.1) were collected during the year 2014-2015 using cascade air samplers with a PM0.1 stage, at two cities in Thailand, Bangkok and Chiang Mai. Their characteristics and seasonal behavior were evaluated based on the thermal/optical reflectance (IMPROVE_TOR) method. Diagnostic indices for their emission sources and the black carbon (BC) concentration were assessed using an aethalometer and related to the monthly emission inventory (El) of particle-bound BC and organic carbon (OC) in order to investigate the contribution of agricultural activities and forest fires as well as agro-industries in Thailand. Monthly provincial Els were evaluated based on the number of agricultural crops produced corresponding to field residue burning and the use of residues as fuel in agro-industries, and also on the number of hot spots from satellite images corresponding to the areas burned by forest fires. The ratio of char-EC/soot-EC describing the relative influence of biomass combustion to diesel emission was found to be in agreement with the El of BC from biomass burning in the size range