1. Hunan Key Laboratory of Typical Environment Pollution and Health Hazards, School of Public Health, Hengyang Medical School, University of South China, Hengyang 421001, PR China
2. State Key Laboratory of Chemo/Biosensing and Chemometrics, School of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, PR China
3. Flux Photon Corporation, 5950 Shiloh Road East, Alpharetta, Georgia 30005, United States