本文以腐植酸溶液的氯化为实验模型,用正交设计法研究了水的pH值、温度、接触时间、腐植酸和游离氯浓度五个因素对氯化饮用水致突变性的影响。结果表明:样品的致突变活性与腐植酸和游离氯浓度呈正相关;与pH值呈负相关;在氯与腐植酸溶液接触后的最初数小时内,样品的致突变活性迅速增强,至7.5小时达高峰,以后,则随时间的延长而逐渐降低;温度的变化对氯化饮用水的致突变活性影响较小。 In this paper, humic acid solution chlorination as an experimental model, orthogonal design method of water pH, temperature, contact time, humic acid and free chlorine concentration of five factors on the chlorinated drinking water mutagenicity. The results showed that the mutagenic activity of the sample was positively correlated with the concentration of humic acid and free chlorine and negatively correlated with the pH value. The mutagenic activity of the sample increased rapidly within the first few hours after exposure to the humic acid solution. After 7.5 hours Reached its peak, but then gradually decreased with time. The change of temperature had little effect on the mutagenic activity of chlorinated drinking water.