The Ames test showed no mutation when routine method was used and the mutagenicity with all the nine concentrations of TA98-S_9 from 11.08 to 709.33mg/L and eight concentrations of TA100-S_9 from 22.17 to 709.33mg/L when gaseous exposure was used.

• Ames常规法为阴性结果；而气态法-S_9TA_(98)菌株从11.；08-709