Effects of storage conditions and pH on chlorine loss in electrolyzed oxidizing (EO) water

Effects of storage conditions and pH on chlorine loss in electrolyzed oxidizing (EO) water
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DOI:
10.1021/jf010822v
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发表时间:
2002-01-02
影响因子:
6.1
通讯作者:
Morita, K
Morita, K
中科院分区:
农林科学1区
文献类型:
--
作者:
Len, SV;Hung, YC;Morita, K

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研究了氧化电位水在不同光照、搅拌和包装条件下贮存过程中的氯损失。还检查了经pH调节的EO水的氯损失。在开放条件下,氯通过蒸发损失遵循一级动力学。氯的损失率增加约5倍,搅拌,但它并没有显着的漫射光的影响。在封闭条件下,氯损失不遵循一级动力学,因为氯损失的主要机理可能是氯物种的自分解而不是氯蒸发。在封闭条件下储存两个月后,漫射光的效果比搅拌更显著。EO水和商业氯化水的氯损失随着pH从酸性(pH 2.5)到碱性(pH 9.0)区域的增加而显著降低。
The chlorine loss of electrolyzed oxidizing (EO) water was examined during storage under different light, agitation, and packaging conditions. The chlorine loss of pH-adjusted EO water was also examined. Under open conditions, the chlorine loss through evaporation followed first-order kinetics. The rate of chlorine loss was increased about 5-fold with agitation, but it was not significantly affected by diffused light. Under closed conditions, the chlorine loss did not follow first-order kinetics, because the primary mechanism of chlorine loss may be self -decomposition of chlorine species rather than chlorine evaporation. The effect of diffused light was more significant compared to agitation after two months of storage under closed conditions. The chlorine loss of EO water and commercial chlorinated water decreased dramatically with the increase of pH from the acidic (pH 2.5) to the alkaline (pH 9.0) region.