Therefore,the corresponding safe concentration(SC)of DM and PDM with low,moderate and high intrinsic viscosity values in water were respectively 140,0.37,0.36 and 0.32 mg/L.

• 并由此计算得到DM、低特征黏度PDM、中特征黏度PDM及高特征黏度PDM的安全使用浓度分别为140、0.；37、0