Guangdong University of Petrochemical Technology, Guangdong University of Petrochemical Technology, affiliation not provided to SSRN, Chinese Academy of Sciences (CAS) - Guangzhou Institute of Geochemistry, South China University of Technology, Chinese Academy of Sciences (CAS) - Guangzhou Institute of Geochemistry, North China Electric Power University - MOE Key Laboratory of Resources and Environmental Systems Optimization, Chinese Academy of Sciences (CAS) - Guangzhou Institute of Geochemistry and University of Connecticut - Department of Chemistry