1. P.E.
2. Asst. Prof., Dept. of Mech. Engrg., Yuan Ze Univ., 135 Yuan-Tung Rd., Nei-Li, Chung-Li, Taiwan, 32036, Republic of China.
3. Prof., Grad. Inst. of Envir. Engrg., Nat. Taiwan Univ., 71 Chou-Shan Rd., Taipei, Taiwan (corresponding author).
4. Prof., Dept. of Anal. Chem., Taipei Medical Coll., Taipei, Taiwan, Republic of China.