| 聚乙烯醇增敏荷移反应分光光度法测定烟碱 |
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| 引用本文： | 高淑琴,杜江锋,杜楠,赵志远,廖力夫.聚乙烯醇增敏荷移反应分光光度法测定烟碱[J].光谱实验室,2010,27(1):273-276. |
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| 作者姓名： | 高淑琴 杜江锋 杜楠 赵志远 廖力夫 |
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| 作者单位： | 南华大学化学化工学院湖南省衡阳市常胜西路28号,421001 |
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| 基金项目： | 国家自然科学基金(20877038);;湖南省卫生厅科研项目(B2006-103) |
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| 摘 要： | 聚乙烯醇对烟碱与2,4-二硝基苯酚的荷移反应配合物的光吸收有显著的增强作用,据此建立了一种分光光度法测定烟碱的新方法。研究了酸度、试剂等多种因素对测定的影响。在最佳实验条件下,测定烟碱的线性范围为2.0—60.0mg/L,相关系数r=0.9969,检出限为0.85mg/L。本方法测定烟草中的烟碱含量,回收率为98.3%—105.6%。
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| 关 键 词： | 烟碱 分光光度法 荷移反应 2，4-二硝基苯酚 聚乙烯醇 |
Spectrophotometric Determination of Nicotine by Charge-Transfer Reaction with Polyethylene Alcohol Sensitization |
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| GAO Shu-Qin,Du Jiang-Feng,DU Nan,ZHAO Zhi-Yuan,LIAO Li-Fu.Spectrophotometric Determination of Nicotine by Charge-Transfer Reaction with Polyethylene Alcohol Sensitization[J].Chinese Journal of Spectroscopy Laboratory,2010,27(1):273-276. |
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| Authors: | GAO Shu-Qin Du Jiang-Feng DU Nan ZHAO Zhi-Yuan LIAO Li-Fu |
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| Institution: | College of Chemistry and Chemical Engineering;University of South China;Hengyang;Hunan 421001;P.R.China |
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| Abstract: | A new spectrophotometric method for the determination of nicotine was developed based on the inhancement of visible absorption of the complex formed from a charge transfer reaction between nicotine and 2,4-dinitrophenol by polyethylene alcohol.The influences of acidity,chemical and manifold facts on the determination were studied,Under the optimized conditions,the linear range for the determination of nicotine was 2.0-60.0mg/L with the detection limit of 0.85mg/L.The proposed method was applied successfully for the determination of nicotine in tobacco samples with the recovery of 98.3%-105.6%. |
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| Keywords: | Nicotine Spectrophotometry Charge-Transfer Reaction 2 4-Dinitrophenol Polyethylene Alcohol |
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