1. Air Pollution and Health Effect Research Center, Prince of Songkla University, Songkhla, Thailand
2. Department of Chemical Engineering, Faculty of Engineering, Prince of Songkla University, Songkhla, Thailand
3. Department of Mechanical Engineering, Faculty of Engineering, Prince of Songkla University, Songkhla, Thailand
4. Graduate School of Natural Science and Technology, Kanazawa University, Ishikawa, Japan