1. MOE Key Laboratory for Analytical Science of Food Safety and Biology Fujian Provincial Key Laboratory of Analysis and Detection Technology for Food Safety College of Chemistry Fuzhou University Fuzhou Fujian 350116 P. R. China
2. State Key Laboratory of Structure of Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Fuzhou Fujian 350002 P. R. China
3. University of Chinese Academy of Sciences Beijing 100049 China