| 溴甲酚紫分光光度法测定烟草薄片中烟碱的研究 |
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| 引用本文： | 罗勇,王淑敏,刘莉,张立科.溴甲酚紫分光光度法测定烟草薄片中烟碱的研究[J].许昌学院学报,2012,31(2):97-100. |
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| 作者姓名： | 罗勇 王淑敏 刘莉 张立科 |
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| 作者单位： | 1. 河南中烟工业有限责任公司驻马店卷烟厂,河南驻马店,463000
2. 许昌学院化学化工学院,河南许昌,461000 |
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| 基金项目： | 基金项目:许昌学院科研基金计划项目 |
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| 摘 要： | 在HAc-NaAc缓冲溶液中,研究了溴甲酚紫与烟碱的相互作用,烟碱-溴甲酚紫-Co2+三元络合物的最大吸收波长λmax=436 nm,摩尔吸光系数κ=6.473 5 L·μmol-1·cm-1,烟碱浓度在0.20～100.00μmol·L-1范围内符合比尔定律,线性回归方程Y=0.647 4X+0.009 4,相关系数R=0.999 6.根据信噪比确定检测限(S/N=3,n=7)为0.10μmol·L-1,该方法准确度、灵敏度高,选择性好,特别适合于中、小型企业快速、大批量地分析烟草样品中的烟碱.
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| 关 键 词： | 紫外可见 烟碱 溴甲酚紫 Co2+ 增敏 十二烷基磺酸钠 |
Study on the Determination of Nicotine in Reconstituted Tobacco using Bromcresol Purple Spectrophotemetry |
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| LUO Yong,WANG Shu-min,LIU Li,ZHANG Li-ke.Study on the Determination of Nicotine in Reconstituted Tobacco using Bromcresol Purple Spectrophotemetry[J].Journal of Xuchang University,2012,31(2):97-100. |
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| Authors: | LUO Yong WANG Shu-min LIU Li ZHANG Li-ke |
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| Institution: | 1.China Tobacco Henan Industrial Co.,LTD,Zhumadian Cigarettes Factory,Zhumadian 463000,China; 2.College of Chmistry and Chmical Engneering,Xuchang University,Xuchang 461000,China) |
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| Abstract: | The interaction between bromcresol purple and nicotine in the HAc-NaAc buffer solution was studied.When the maximum absorption wavelength of nicotine-bromocresol purple-Co2+ ternary complex λmax=436 nm,the molar absorption coefficientκ=6.473 5 L·μmoL-1·cm-1,Bear’s law is obeyed by the concentration of nicotine in the range of 0.20~100.00 μmol·L-1,the linear regression equation is Y=0.647 35X+0.009 4,the correlation coefficient is R=0.999 6,the detection limit is 0.01 μmol·L-1.This method has high accuracy,sensitivity and selectivity,especially suitable for the quick and mass determination of nicotine in tobacco samples in small and medium enterprises. |
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| Keywords: | UV nicotine bromcresol purple Co2 + sensitization sodium dodecyl sulfate |
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