1. Hebei
Key Laboratory of Applied Chemistry, School of Environmental and Chemical
Engineering, Yanshan University, Qinhuangdao 066004, P. R. China
2. State
Key Laboratory of Metastable Materials Science and Technology, Yanshan University, Qinhuangdao 066004, P. R. China
3. Qinghuangdao Entry-Exit Inspection & Quarantine Bureau Coal Inspection Technique Center, Qinhuangdao 066003, P. R. China
4. Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology (CICAEET), School of Environmental Science and Engineering, Nanjing University of Information Science & Technology, Nanjing 210044, P. R. China