| 分光光度法测定白酒中微量甲醇的研究 |
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| 引用本文： | 龙德清,周新,王娟,邹强.分光光度法测定白酒中微量甲醇的研究[J].郧阳师范高等专科学校学报,2002,22(3):63-65. |
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| 作者姓名： | 龙德清 周新 王娟 邹强 |
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| 作者单位： | 郧阳师范高等专科学校,化学系,湖北,丹江口,442700 |
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| 基金项目： | 郧阳师范高等专科学校重点科研项目资助 (2 0 0 10 8) |
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| 摘 要： | 甲醇在高锰酸钾—磷酸溶液中放置 60min氧化成甲醛 ,甲醛与乙酰丙酮在沸水浴中加热 2 0min进行显色反应 ,在波长为 418nm处 ,以试剂空白为参比 ,用分光光度法测定其吸光度 .根据吸光度与溶液浓度的关系 ,计算出白酒中甲醇的含量
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| 关 键 词： | 分光光度法 比色分析 白酒 甲醇 乙酰丙酮 |
| 文章编号： | 1008-6072(2002)03-0063-03 |
| 修稿时间： | 2002年4月24日 |
The Research of Absorptiophotometric Detemination of Element Methanol in Wine |
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| LONG De-qing,ZHOU Xin,Wang Juan,etal.The Research of Absorptiophotometric Detemination of Element Methanol in Wine[J].Journal of Yunyang Teachers College,2002,22(3):63-65. |
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| Authors: | LONG De-qing ZHOU Xin Wang Juan etal |
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| Abstract: | The thesis discusses several factors which affect the acetyl acetone determination of element methanol in wine sample. It also gives some proper determination conditions: After being put in KmnO 4 -H 3 PO 4 solution for 60 minutes, methanol is oxidized by formal dehyde; the yellow colored product in boiling water for 20 minutes. Compared with the wine without methanol, the absorbance of the yellow compound can be measured by absorption photometry at its absorption maximal (418nm) .The content of methanol in wine sample can be calculated according to the relationship between absorption photometry and the solution consistency. |
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| Keywords: | absorptionphotometry colour contrast analysis wine methanol acetylacetone |
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