研究了聚苯胺在水中的抗菌作用及其相应机制。对用掺杂聚苯胺处理后污水的水质分析和研究结果表明，其微生物指标可达到中水水质，但由于掺杂态聚苯胺在水中发生酸溶出效应，造成水体的化学需氧量COD（Chemical oxygen demand）值升高，形成对水的二次污染。当水中菌液浓度为3.0~102 CFU•mL-1时本征态聚苯胺的抗菌效果达99%，微生物指标达到生活饮用水标准值，同时并不二次污染水体。碘蓝分光光度法分析结果表明，聚苯胺将水中的氧气氧化为活性氧而杀死细菌是聚苯胺在水中抗菌的另一个可能机制。
Antibacterial activity of polyaniline and the mechanism in water was studied in this paper. The results indicated that the microorganism index of treated sewage water for urban by doped polyaniline could reach to the level of reclaimed water. Due to the dissolving out of doping acid the doped polyaniline could raise the COD (chemical oxygen demand) of wate and result in secondary pollution. In comparison, the antibacterial rate of emeraldine base polyaniline could reach up to 99% without contamination. The result of analysis by KI iodine-blue spectrophotometry reveals that the activity of active oxygen created by oxidation of polyaniline may be another antibacterial mechanism during treament of water.
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