1. Fujian Special Equipment Inspection and Research Institute, Fujian Boiler & Pressure Vessel Inspection and Research Institute, National Industrial Boiler Quality Inspection Center (Fujian), Fuzhou 350008, PR China
2. Hebei Key Laboratory of Mineral Resources and Ecological Environment Monitoring, Baoding 071000, PR China
3. Hebei Key Lab of Power Plant Flue Gas Multi-Pollutants Control, Department of Environmental Science and Engineering, North China Electric Power University, Baoding 071003, PR China