1. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, Guangdong 510640. China
2. CAS Center for Excellence in Deep Earth Science, Guangzhou, Guangdong 510640, China
3. Guangdong-Hong Kong-Macao, Joint Laboratory for Environmental Pollution and Control, Guangzhou Institute of Geochemistry, Chinese Academy of Science, Guangzhou, Guangdong 510640. China
4. Guangdong Provincial Key Laboratory of Environmental Protection and Resources Utilization, Chinese Academy of Science, Guangzhou, Guangdong 510640. China
5. University of Chinese Academy of Sciences, Beijing 100049, China
6. Institute for Environmental and Climate Research, Jinan University, Guangzhou, Guangdong 511443, China
7. Cooperative Institute for Research in the Environmental Sciences (CIRES), University of Colorado at Boulder, Boulder, Colorado 80309, United States
8. Department of Chemistry, University of Colorado at Boulder, Boulder, Colorado 80309, United States
9. Aerodyne Research Inc., Billerica, Massachusetts 01821, United States