1. Research Center of Analytical Instrumentation, Analytical & Testing Centre, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China
2. Department
of Environmental and Food Engineering, Liuzhou Vocational and Technical College, Liuzhou 545006, P.
R. China
3. Faculty of Biotechnology
Industry, Chengdu University, Chengdu 610106,
P. R. China