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Chemiluminescence of ClO3^--SO3^2- -Rh6G-SDBS System and Its Application to the Determination of Sulfite

ISSN号：1001-604X
期刊名称：《中国化学：英文版》
时间：0
分类：O644.1[理学—物理化学;理学—化学]
作者机构：[1]State Key Laboratory of Environmental Chemistry and Ecotoxicology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China
相关基金：Project supported by the National Fund for Distinguished Young Scholars of China （No. 20125514）, the National Natural Science Foundation of China （Nos. 20437020, 50273046） and the Major Research Program of Chinese Academy of Sciences （No. KZCX3-SW-432）.

关键词：亚硫酸盐, 化学发光, 流体系统, 分析化学, chemiluminescence, sulfite, micelle synergism

中文摘要：

基于 micelle 协同机制，为亚硫酸盐的决心的一个化合光(CL ) 流动系统被描述。在酸的答案与亚硫酸盐从氯酸盐的反应产生的 CL 信号是很弱的，当钠 dodecylbenzenesulfonate (SDBS ) 的融合导致了时一高度 chemiluminescent 紧张。这个工作的主要目标是调查并且发展 SDBS micelle 合作 CL 系统。机制被 spectrometry 建议并且证明。结果显示 SDBS 微粒的唯一的结构支持了玫瑰精 6G (Rh6G ) 和容易得多的精力转移的聚集，导致到在 CL 排放的红的显著移动。这个 CL 系统为亚硫酸盐的决心被开发，亚硫酸盐的集中与在 5.0 的范围的 CL 紧张成正比

英文摘要：

Based on the micelle synergism mechanism, a chemiluminescence （CL） flow system for the determination of sulfite was described. The CL signal generated from the reaction of chlorate with sulfite in acidic solution was very weak, while the interfusion of sodium dodecylbenzenesulfonate （SDBS） resulted in a highly chemiluminescent intensity. The major goal of this work was to investigate and develop the SDBS rnicelle synergetic CL system. The mechanism was proposed and proved by spectrometry. The results indicated that the unique structure of SDBS micelles prorooted the aggregation of rhodamine 6G （Rh6G） and a much easier energy transfer, leading to a marked shift to red in the CL emission. This CL system was developed for the determination of sulfite and the concentration of sulfite was proportional to the CL intensity in the range of 5.0× 10^-8--1.0× 10^-5 mol/L with the detection limit of 1.7×10^-8 mol/L （S/N=3）. The relative standard deviation was 3.3% for 1.0×10^ 6 mol/L sulfite solution with eleven repeated measurements. This method was successfully applied to the determination of sulfite in powder sugar.