摘要
目的 观察某84消毒液在存放过程中时间和温度对有效氯含量的影响.方法 采用碘量法检测某商品化84消毒液在4、10、20、30和37℃保存12周有效氯含量变化,计算降解率并绘制消毒液等高拟合曲线.结果 初始有效氯含量为72.31 g/L的84消毒液,分别于4、10、20、30和37℃保存12周后,有效氯浓度分别下降至59.90、58.13、55.60、45.72和38.63 g/L,有效氯降解率依次为 17.16％、19.61％、23.10％、36.77％和49.34％,等高拟合曲线结果显示,存放温度与降解速率呈负相关.在5个保存温度下,前5周有效氯降解速度明显高于后7周.保存温度低于30℃时,5周后有效氯含量处于稳定状态.结论 温度越高,84消毒液有效氯含量下降趋势越明显,在低浓度下降解速度相对缓慢,消毒液更加稳定.
Abstract
Objective To observe the effect of time and temperature on the concentration of available chlorine in a certain 84 disinfectant during storage.Methods The iodine assay was used to detect the changes of available chlorine concentration of a commercial 84 disinfectant after 12 weeks at 4,10,20,30 and 37 ℃.The degradation rate was calculated and the high fitting curve of the disinfectant was plotted.Results After 12 weeks storage at 4,10,20,30 and 37℃,the available chlorine concentrations of 84 disinfectant with initial available chlorine content of 72.31 g/L decreased to 59.90,58.13,55.60,45.72 and 38.63 g/L,respectively.The degradation rates of available chlorine were 17.16％,19.61％,23.10％,36.77％and 49.34％,respectively.The degradation rate of available chlorine in the first 5 weeks was significantly higher than that in the last 7 weeks at 5 storage temperatures.When the storage temperature was below 30℃,the available chlorine content was stable after 5 weeks.Conclusion The higher the temperature,the faster decrease of the effective chlorine concentration.At low concentration,decrease rate is relative slow,and the disinfectant is more stable.
基金项目
军队后勤科研计划重点项目(BWS20J020)
军队医学科技青年培育计划拔尖项目(21QNPY087)
维普
万方数据