State Key Laboratory of Organic Geochemistry, Guangzhou Institute of
Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
CAS Center for Excellence in Deep Earth Science, Guangzhou 510640,
China
Tiangang Tang
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of
Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
Key Laboratory of Agro-ecological Processes in Subtropical Region,
Institute of Subtropical Agriculture, Chinese Academy of Sciences, Changsha,
410125, China
Shizhen Zhao
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of
Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
CAS Center for Excellence in Deep Earth Science, Guangzhou 510640,
China
Guangcai Zhong
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of
Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
CAS Center for Excellence in Deep Earth Science, Guangzhou 510640,
China
Sanyuan Zhu
State Key Laboratory of Organic Geochemistry, Guangzhou Institute of
Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
CAS Center for Excellence in Deep Earth Science, Guangzhou 510640,
China
We analyzed compound-specific dual-carbon isotope signatures (Δ14C and δ13C) of dominant secondary organic aerosol (SOA) tracer molecules (i.e., oxalic acid) to investigate the fates of SOAs in the atmosphere at five emission hotspots in China. The results indicated that SOA carbon sources and chemical processes producing SOAs vary spatially and seasonally, and these variations need to be included in Chinese climate projection models and air quality management practices.
We analyzed compound-specific dual-carbon isotope signatures (Δ14C and δ13C) of dominant...
