藤氏蓝阻抑光度法测定消毒剂中有效氯的实用性研究  

Practical research on available chlorine in disinfectant detection by inhibition-spectrophotometry of Toshi blue

作　　者：向晓明[1] 张小林 戴兴德 

机构地区：[1]西北民族大学化工学院,甘肃兰州730030 [2]甘肃医学院

出　　处：《中国消毒学杂志》2017年第2期105-108,共4页Chinese Journal of Disinfection

摘　　要：目的建立一种藤氏蓝阻抑光度法,用于测定消毒剂中的有效氯。方法采用分光光度计方法,利用活性氯在酸性环境与Fe(Ⅱ)-铁氰化钾显色反应原理,建立藤氏蓝阻抑光度法测定消毒剂中有效氯。结果应用新建立的方法在吸收波长为720 nm,有效氯质量浓度在0.15~3.5μg/ml范围呈现良好的线性关系。线性回归方程△A=0.02+0.2268ρ(μg/ml),相关系数R=0.9969,检出限为0.13μg/ml。结论采用本研究建立的方法,用于含氯消毒剂中有效氯测定,分析结果满意。Objective Use potassium ivy＇s blue system to establish a new method for measuring available chlorine in disinfectant. Methods In the medium of sulfuric acid,available chlorine significantly inhibited the chromogenic reaction of Fe（ II）- Potassium system,so inhibition- spectrophotometry of Toshi blue method was established to detect the available chlorine in disinfectant. Results The system measured in the experiment had a maximum absorption at 720 nm. The quality concentration of available chlorine was obeyed in the range of 0. 15 ~ 3. 5 μg / ml. The linear regression equation was △A =0. 02 ＋ 0. 2268ρ（ μg / ml）,and the correlation coefficient was 0. 9969. The detection limit was 0. 13 μg / ml. Conclusion The method can be used to measure available chlorine in chlorine disinfectants,and the result is satisfactory.

关 键 词：有效氯 藤氏蓝 阻抑光度法 含量测定 

分 类 号：R187.1[医药卫生—流行病学]