However, the residue ozone in high concentration is environmentally hazardous, which very often exceed the maximum acceptable concentration (0.16mg/m 3) in compliance with the national standard.

• 然而常用的混合器中臭氧不可能被完全利用 ；排出的剩余臭氧气体的浓度较高 ；远大于一类区浓度限值 0 .；1 6mg/m3。