| 氯代十六烷基吡啶缔合微粒光度法测定二氧化氯 |
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| 引用本文： | 王春民,李纪顺,黄春玉,赵长凤,蒋治良.氯代十六烷基吡啶缔合微粒光度法测定二氧化氯[J].环境科学与技术,2007,30(3):38-40. |
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| 作者姓名： | 王春民 李纪顺 黄春玉 赵长凤 蒋治良 |
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| 作者单位： | 广西师范大学环境与资源学院,桂林,541004 |
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| 摘 要： | 在pH3.49的NaAC-HCl介质中,ClO2与过量的KI反应生成I3-,I3-在350nm处有一吸收峰;当阳离子表面活性剂(CS)氯代十六烷基吡啶(CPCM)等存在时,形成淡黄色的较稳定的缔合微粒(CPCM-I3)n,在354nm处产生一个吸收峰,在470nm和520nm处产生2个共振散射峰。ClO2浓度C在0.0149～1.524mg/L范围内符合朗伯比耳定律,回归方程为△A=0.1136C+0.0001,相关系数R为0.9988,检测限为0.007mg/L。据此,建立了一种痕量ClO2光度分析新方法,用于样品分析,结果令人满意。
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| 关 键 词： | 二氧化氯 阳离子表面活性剂 缔合微粒 分光光度法 共振散射 |
| 文章编号： | 1003-6504（2007）03-0038-03 |
| 修稿时间： | 2006-05-15 |
Spectrophotometric Determination of ClO2 with Cetylpyridinium Chloride Association Particle |
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| WANG Chun-ming,LI Ji-shun,HUANG Chun-yu,ZHAO Chang-feng,JIANG Zhi-liang.Spectrophotometric Determination of ClO2 with Cetylpyridinium Chloride Association Particle[J].Environmental Science and Technology,2007,30(3):38-40. |
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| Authors: | WANG Chun-ming LI Ji-shun HUANG Chun-yu ZHAO Chang-feng JIANG Zhi-liang |
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| Abstract: | A spectrophotometric method was developed for the determination of ClO2 based on oxidation of I- to I3- by ClO2 and the further reaction of I3- with cationic surfactant cetyl-pyridinium chloride mono-hydrate to form (CPCM-I3)n association particle in NaAC-HCl buffered solution with pH 3.49. Concentrations of ClO2 within the range of 0.0149-10524 mg/L fit well to the Lambert-Beer Law. |
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| Keywords: | ClO_2 cationic surfactant association particle spectrophotometry resonance scattering |
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