1. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China
2. College of Chemistry, Chemical Engineering and Biotechnology, Donghua University, Shanghai 201620, China
3. Tarim Oilfield Company, PetroChina, Kuerle 841000, China
4. College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing 100049, China