1. School of Chemistry and Chemical Engineering, Qinghai University for Nationalities, Xining, Qinghai 810007, P. R. China
2. Key Laboratory of National Ethnic Affairs Commission of Resource Chemistry and Ecological Environment Protection on Qinghai-Tibet Plateau, Xining, Qinghai 810007, P. R. China
3. Institute of Disaster and Emergency Medicine, Tianjin University, Tianjin 300072, P. R. China
4. School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, P. R. China
5. Key Laboratory of Systems Bioengineering (Ministry of Education), Tianjin University, Tianjin 300072, P. R. China