| 溶剂浮选光度法间接测定烟草中尼古丁 |
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| 引用本文： | 阎永胜,李春香,赵干卿,王彦玲.溶剂浮选光度法间接测定烟草中尼古丁[J].理化检验(化学分册),2001,37(2):78-79,81. |
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| 作者姓名： | 阎永胜 李春香 赵干卿 王彦玲 |
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| 作者单位： | 1. 华中科技大学环境科学与工程学院
2. 河南平顶山师范高等专科学校化学系 |
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| 摘 要： | 利用在碱性条件下Cu（Ⅱ）与烟碱（C10H14N2)生成浅蓝色沉淀，通过浮选光度法直接测定Cu（Ⅱ），进而间接测定烟草中的烟碱含量。此法准确度高，回收率为98％－100％，精密度好，RSD为0.12%－1.30%.
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| 关 键 词： | 烟草 浮选光度法 尼古丁 测定 |
| 文章编号： | 1001-4020(2001)02-0078-02 |
SOLVENT FLOATATION-INDIRECT PHOTOMETRIC DETERMINATION OF NICOTINE IN TOBACCO |
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| YAN Yong-sheng,LI Chun-xiang,ZHAO Gan-qing,WANG Yan-ling.SOLVENT FLOATATION-INDIRECT PHOTOMETRIC DETERMINATION OF NICOTINE IN TOBACCO[J].Physical Testing and Chemical Analysis Part B:Chemical Analgsis,2001,37(2):78-79,81. |
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| Authors: | YAN Yong-sheng LI Chun-xiang ZHAO Gan-qing WANG Yan-ling |
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| Abstract: | It is reported that in a buffer solution of pH 9, nicotine is reacted with Cu(I) ion forming a light blue precipitate which can be concentrated by solvent floatation into CC14. The copper content in the CC14 solution is then determined photometrically with DDTC as color reagent, and nicotine is determined indirectly. Recoveries
obtained are in the range of 98%100% and the RSDs' found are in the range of 0. 12～1.3%. The proposed method has been applied to the analysis of tobacco. |
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| Keywords: | Solvent floatation Nicotine Tobacco Photometry |
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