烧焦
烟灰
燃烧
炭黑
气溶胶
环境科学
碳纤维
环境化学
大气科学
化学
材料科学
气象学
地理
物理
有机化学
天然橡胶
复合数
复合材料
作者
Junjie Cai,Hongxing Jiang,Yingjun Chen,Zeyu Liu,Yong Han,Huizhong Shen,Jianzhong Song,Jun Li,Yanlin Zhang,Rong Wang,Jianmin Chen,Gan Zhang
标识
DOI:10.1038/s41467-023-42192-8
摘要
Emission factors and inventories of black carbon (BC) aerosols are crucial for estimating their adverse atmospheric effect. However, it is imperative to separate BC emissions into char and soot subgroups due to their significantly different physicochemical properties and potential effects. Here, we present a substantial dataset of char and soot emission factors derived from field and laboratory measurements. Based on the latest results of the char-to-soot ratio, we further reconstructed the emission inventories of char and soot for the years 1960-2017 in China. Our findings indicate that char dominates annual BC emissions and its huge historical reduction, which can be attributable to the rapid changes in energy structure, combustion technology and emission standards in recent decades. Our results suggest that further BC emission reductions in both China and the world should focus on char, which mainly derives from lower-temperature combustion and is easier to decrease compared to soot.
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