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首页> 外文期刊>Biocontrol Science >The mode of action of sodium hypochlorite in the cleaning process.
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The mode of action of sodium hypochlorite in the cleaning process.

机译：次氯酸钠在清洁过程中的作用方式。

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摘要

The action of sodium hypochlorite (NaOCl) solution in the cleaning of alumina (Al2O3) particles fouled with bovine serum albumin (BSA) or pectin was studied as a function of pH. The efficacy of NaOCl in the cleaning process was evaluated in the pH region where OH- alone exerted no significant action on BSA or pectin removal. The efficiency and the rate of the removal of BSA or pectin increased with increasing available chlorine concentrations and pH. The pH dependence of the efficacy of NaOCl could be explained on the basis of the equilibrium between undissociated hypochlorous acid (HOCl) and dissociated hypochlorite ion (OCl-). The efficacy of NaOCl in the removal of BSA or pectin depended on the concentration of OCl-, but not on HOCl. Size-exclusion chromatographic analysis showed that BSA molecules were partially decomposed by the action of NaOCl, whereas no significant variation in the molecular weight of pectin molecules took place. The difference between the actions of OCl- in the removal of BSA and pectin could probably be ascribed to the reactivity of OCl- with their molecules. It could be concluded that the concentration of OCl- was a major factor determining the actual NaOCl concentration required for an efficient cleaning treatment..
机译：研究了次氯酸钠（NaOCl）溶液在清洁被牛血清白蛋白（BSA）或果胶污染的氧化铝（Al2O3）颗粒中的作用与pH的关系。在pH范围内评估了NaOCl在清洁过程中的功效，在该pH范围内，单独的OH-对BSA或果胶的去除没有明显作用。 BSA或果胶的去除效率和去除率随有效氯浓度和pH值的增加而增加。可以根据未离解的次氯酸（HOCl）和离解的次氯酸根离子（OCl-）之间的平衡来解释NaOCl功效的pH依赖性。 NaOCl去除BSA或果胶的功效取决于OCl-的浓度，而不取决于HOCl。尺寸排阻色谱分析表明，BSA分子在NaOCl的作用下部分分解，而果胶分子的分子量没有明显变化。 OCl-在去除BSA和果胶中的作用之间的差异可能归因于OCl-与它们的分子的反应性。可以得出结论，OCl-的浓度是决定有效清洁处理所需的实际NaOCl浓度的主要因素。

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