In situ biomass burning enhanced the contribution of biogenic sources to sulfate aerosol in subtropical cities

doi:10.1016/j.scitotenv.2023.168384

	In situ biomass burning enhanced the contribution of biogenic sources to sulfate aerosol in subtropical cities
	Li, Tingting 1,2,3,4; Li, Jun 1,2,3; Xie, Luhua 1,2,3; Lin, Boji 1,2,3,4; Jiang, Hongxing 1,2; Sun, Rong 5; Wang, Xiao 1,2,3,4; Liu, Ben 1,2,3,4; Tian, Chongguo 5; Li, Qilu 6
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2024-01-15
卷号	908 页码:11
关键词	Sulfate sources Rice straw burning Sulfate oxidation pathway Subtropical megacity Sulfur isotope Oxygen isotope
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2023.168384
通讯作者	Li, Jun(junli@gig.ac.cn) ; Xie, Luhua(lhxie@gig.ac.cn)
英文摘要	Sulfurous gases released by biogenic sources play a key role in the global sulfur cycle. However, the contribution of biogenic sources to sulfate aerosol in the urban atmosphere has received little attention. Emission sources and formation process of sulfate in Guangzhou, a subtropical mega-city in China, were clarified using multiple methods, including isotope tracers and chemical markers. The delta 18O of sulfate suggested that secondary sulfate was the dominant component (84 %) of sulfate aerosol, which mainly formed by transition metal ion (TMI) catalyzed oxidation (31 %) and OH radical oxidation (30 %). The factors driving secondary sulfate formation were revealed using a tree boosting model, which suggested that NH3, temperature, and oxidants were the most important factors. The delta 34S of sulfate indicated that biogenic sources accounted for annual average of 26.0 % of the sulfate, which increased to 30.4 % in winter monsoon period. Rice straw burning enhanced sulfate formation by promoting the release of reduced sulfur from soil, which is rapidly converted into sulfate under a subtropical urban atmosphere with high concentration of NH3 and oxidants. This study revealed the important influence of rice straw burning on biogenic sulfur emission during the rice harvest, thereby providing insight into the sulfur cycle and regional air pollution.
WOS关键词	SULFUR ISOTOPE COMPOSITIONS ; PEARL RIVER DELTA ; WATER-SOLUBLE IONS ; SOURCE APPORTIONMENT ; ATMOSPHERIC SULFATE ; CHINESE MEGACITIES ; DIMETHYL SULFIDE ; MULTIPLE OXYGEN ; SO2 OXIDATION ; HAZE EVENTS
WOS研究方向	Environmental Sciences & Ecology
语种	英语
WOS记录号	WOS:001165469900001
资助机构	National Natural Science Foundation of China ; Alliance of International Science Organizations ; Guangzhou Science and Technology Project ; Guangdong Foundation for Program of Science and Technology Research
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/34895]
专题	中国科学院烟台海岸带研究所
通讯作者	Li, Jun; Xie, Luhua
作者单位	1.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, State Key Lab Isotope Geochem,Guangdong Prov Key L, Guangzhou 510640, Peoples R China 2.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Hong Kong 510640, Guangdong, Peoples R China 3.CAS Ctr Excellence Deep Earth Sci, Guangzhou 510640, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 6.Henan Normal Univ, Sch Environm, Key Lab Yellow River & Huai River Water Environm &, Henan Key Lab Environm Pollut Control,Minist Educ, Xinxiang 453007, Peoples R China
推荐引用方式 GB/T 7714	Li, Tingting,Li, Jun,Xie, Luhua,et al. In situ biomass burning enhanced the contribution of biogenic sources to sulfate aerosol in subtropical cities[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,908:11.
APA	Li, Tingting.,Li, Jun.,Xie, Luhua.,Lin, Boji.,Jiang, Hongxing.,...&Peng, Ping 'an.(2024).In situ biomass burning enhanced the contribution of biogenic sources to sulfate aerosol in subtropical cities.SCIENCE OF THE TOTAL ENVIRONMENT,908,11.
MLA	Li, Tingting,et al."In situ biomass burning enhanced the contribution of biogenic sources to sulfate aerosol in subtropical cities".SCIENCE OF THE TOTAL ENVIRONMENT 908(2024):11.