1. Department of Chemical Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand
2. Air Pollution and Health Effect Research Center, Prince of Songkla University, Songkhla, 90110, Thailand
3. Department of Industrial and Manufacturing Engineering, Faculty of Engineering, Prince of Songkla University, Hat Yai, Songkhla 90110, Thailand