1. Key Laboratory of Bioelectrochemistry & Environmental Analysis of Gansu Province, College of Chemistry & Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
2. Lanzhou Ecological Environment Monitoring Center of Gansu Province, Lanzhou 730000, China
3. CAS Key Laboratory of Chemistry of Northwestern Plant Resources and Key Laboratory for Natural Medicine of Gansu Province, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
4. School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
5. College of Chemistry, Zhengzhou University, Zhengzhou 450001, China