各种因素对二氧化氯复合消毒剂稳定性的观察

INFLUENCES OF VARIOUS FACTORS ON THE STABILITY OF COMPOUND CHLORINE DIOXIDE DISINFECTANT

在实验室内,观察了不同因素对二氧化氯复合消毒剂贮存时有效氯浓度下降的影响。结果表明,碱性溶液稳定性优于酸性者,低温下存放优于高温存放者,高浓度溶液优于低浓度者,棕色瓶装优于白色瓶装者。

The stability of available chlorine content in compound chlorine dioxide disinfectant (containing chlorine dioxide, hydrogen peroxide, chlorine and ozone) produced by chlorine dioxide combined sterilizer was examined . The experiment indicated that the available chlorine content in the disinfectant was unstable. The degradation rate of available chlorine in the original solution (pH 2.13) stored in brown glass bottle at room temperature was 24.79％ after 10 days and 49.20％ on 62th day. When the pH of original solution was adjusted to 11.80 by addition of sodium hydroxide ,the stability of available chlorine content could be enhanced and the degradation rate was only 0.38％ on 10th day and 1.38％ on 62th day of storage. The available chlorine content of alkalized disinfectant solution was more stable at low temperature (0℃) than room temperature (18～24℃), at high concentration (containing 1815 mg / L available chlorine)than low concentration (containing 886 mg / L available chlorine), and in brown bottle than in colorless bottle.