中文摘要：

研究稳定性二氧化氯对水华微囊藻叶绿素a及酶活性的影响。研究结果表明：水华微囊藻叶绿素a的抑制率与稳定性二氧化氯的投加质量浓度成正相关性,当稳定性二氧化氯投加质量浓度为1.08 mg/L时对水华微囊藻叶绿素a抑制率超过51%。CAT酶活性随着稳定性二氧化氯投加质量浓度的增大而增加,当投加质量浓度为1.08mg/L时,CAT酶活性是对照组的8.6倍,但SOD酶活性反而降低,同时膜脂过氧化产物和氧化胁迫的增加导致水华微囊藻丙二醛（MDA）值出现异常,表明稳定性二氧化氯对水华微囊藻具有很好的抑制效应。

英文摘要：

The effects of stable chlorine dioxide（ClO2） on Cyanobacteria Microcystis flos-aquae were investigated by determining the chlorophyll a content and the activity of antioxidant enzymes. The results show that there is positive correlation between the inhibition rate of chlorophyll a content and the concentration of ClO2. The inhibition rate of chlorophyll a surpasses 51% at 1.08 mg/L. The catalase（CAT） activity increases with the increase of ClO2 concentrations, and is 8.6 times of the control at the concentration of 1.08 mg/L. However, the SOD activity decreases at 1.08 mg/L. At the same time, the increase of lipid peroxidation products and oxidative stress causes the malondialdehyde（MDA） content to become abnormal. The ClO2 has adverse effect on the growth of Microcystis flos-aquae.