β-环糊精对次氯酸钠溶液稳定性影响的研究

以不同浓度的β-环糊精作稳定剂,观察对含有效氯0.2％的次氯酸钠溶液化学稳定性及抗菌活性的影响。试验结果表明,加入0.03％β-环糊精能显著提高次氯酸钠溶液的稳定性。在室温下,密闭容器中放置60天,有效氯仍保留初始浓度的95.84％。而未加β-环糊精的对照样本仅有74.55％;开放容器内放置14天,有效氯可保留初始浓度的93.32％。而对照样本只有76.50％。0.03％β-环糊精对次氯酸钠溶液的抗菌活性有增强作用,但随其浓度增大而减弱。

INFLUENCE OF β-CYCLODEXTRIN ON STABILITY OF SODIUM HYPOCHLORITE SOLUTION

β-cyclodextrin was used as stabilizer and its influence on chemical stability and antibacterial activity of sodium hypochlorite solution (containing 0.2% available chlorine) was observed. The experimental result indicated that 0.03％, β-cyclodextrin was the best concentration for choice. The available chlorine in sodium hypochlorite solution containing the stabilizer only decreased to 95.84% of the original level after storage in airtight colorless glass bottle at room temperature under sunlight for 60 days, while that in sodium hypochlorite solution without the stabilizer decreased to 74.55% under the same conditions. In open container, the sodium hypoehlorite solution could retain 93.32% of available chlorine after storage for 14 days when the stabilizer was added, while only 76.50％ of available chlorine was left in absence of the stabilizer. 0.03％, cyciodextrin can potentiate the bacteriostatic property of sodium hypochlorite solution, but this action decreases with increasing concentration.