1. Professor and Director, Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Univ. of Technology, Beijing 100124, China (corresponding author).
2. Postgraduate, Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Univ. of Technology, Beijing 100124, China.
3. Ph.D. Candidate, Key Laboratory of Beijing on Regional Air Pollution Control, Beijing Univ. of Technology, Beijing 100124, China.