流动注射化学发光法测定自来水中二氧化氯  

Flow Injection Chemiluminescence Determination of Chlorine Dioxide in Tap Water

作　　者：刘希东[1] 郭惠[1] 

机构地区：[1]重庆文理学院化学与环境科学系,重庆402168

出　　处：《分析测试学报》2006年第2期81-83,86,共4页Journal of Instrumental Analysis

基　　金：重庆市教委科学技术研究资助项目(031203)

摘　　要：在pH12．5的NaOH—KCl缓冲介质中，ClO2直接氧化Luminol能产生很强的化学发光，而且发光强度在一定的范围内与ClO2的浓度呈线性关系，据此建立了流动注射化学发光测定ClO2的新方法。探讨了最佳的发光条件，测定ClO2的线性范围为0．5—200μg／L，检出限为0．3μg／L。本法简便、怏速、灵敏，选择性和重复性较好，应用于自来水中剩余ClO2的测定，结果满意。A flow injection chemiluminescence method was developed for the determination of ClO2 based on the reaction of ClO2 with luminol in the medium of NaOH - KCl buffer solution at pH 12. 5. The optimum condition of chemiluminescence was investigated. The linear range of determination was 0. 5 - 200 μg/L with a detection limit of 0. 3 μg/L. The method is highly selective, rapid, simple, sensitive and repeatable. It has been applied to the determination of ClO2 in tap water with satisfactory results.

关 键 词：二氧化氯 鲁米诺 自来水 流动注射 化学发光 

分 类 号：O657.32[理学—分析化学]