卷烟烟气中活性自由基的自旋捕获ESR研究

波谱学杂志 ›› 2005, Vol. 22 ›› Issue (1): 21-25.

卷烟烟气中活性自由基的自旋捕获ESR研究

1.中国科学院化学研究所，分子动态与稳态结构国家重点实验室，北京 100080；2.北京化工大学理学院，北京 100029; 3.郑州烟草研究院，河南郑州 450003；4.佳木斯大学化学与药学院，黑龙江佳木斯 154007

收稿日期:2004-05-17 修回日期:2004-10-15 出版日期:2005-03-05 发布日期:2005-03-05
基金资助:
国家烟草专卖局科技项目（国烟科[2001]504号）

Spin Trapping-ESR Study on Free Radicals in Cigarette Smoke

1.Institute of Chemistry, The Chinese Acad. of Science, Beijing 100080, China;
2.Faculty of Sciences, Beijing of Chemical Technology, Beijing 100029, China;
3.Zhengzhou Tobacco Research Institute of CNTC, Zhengzhou 450003, China; 
4.Chemical and Pharmaceutical School of Jiamusi University , Jiamusi 154007, China

Received:2004-05-17 Revised:2004-10-15 Online:2005-03-05 Published:2005-03-05
Supported by:
国家烟草专卖局科技项目（国烟科[2001]504号）

摘要/Abstract

摘要：

卷烟烟气中的瞬态自由基对人体健康是相当有害的，而检测活性自由基最常用的方法是自旋捕获方法. 本研究中使用高效新型捕捉剂DEPMPO能够直接在水相中捕捉到烷基自由基与羟基自由基，并未发现烷氧自由基加合物. 考虑到DEPMPO对活性自由基的捕捉能力和加合物ESR谱图解析特征性都优于PBN与DMPO，且在有机溶剂中溶解较多的氧分子. 因此认为以往文献中所捕获的烷氧自由基来源于烷基自由基氧化后的次级自由基产物.

关键词: 电子自旋共振, 烟气自由基, 自旋捕获, DEPMPO

Abstract:

It is known that free radicals in cigarette smoke do harm to the human health. The most common way to detect the reactive free radicals is electron spin resonance (ESR) spectroscopy in conjunction with the spin trapping method. In this paper with a highly efficient and novel spin trap DEPMPO, the alkyl radicals and hydroxyl radical were obtained in the aqueous medium, among of which no adducts of alkoxyl radicals were discovered. In view of the fact that more oxygen molecule dissolved in organic solvents as well as the priority of the ability of DEPMPO in capturing reactive free radicals and its character of ESR spectrum to those of PBN and DMPO, we considered that the trapped alkoxyl radicals in the previous paper may derive from the secondary radical products by oxidation of alkyl radicals.

Key words: cigarette smoke, radicals, spin trapping, ESR, DEPMPO

中图分类号:

O482.53

吕玉光, 严宝珍, 田秋, 赵明月, 聂聪, 曾波, 刘阳平, 刘扬. 卷烟烟气中活性自由基的自旋捕获ESR研究[J]. 波谱学杂志, 2005, 22(1): 21-25.

LV Yu-Guang, Yan-Bao-Zhen, Tian-Qiu, Zhao-Ming-Yue, Nie-Cong, ZENG Bei, LIU Yang-Peng, Liu-Yang. Spin Trapping-ESR Study on Free Radicals in Cigarette Smoke[J]. Chinese Journal of Magnetic Resonance, 2005, 22(1): 21-25.

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