| 分光光度法测定市售白酒中甲醇含量 |
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| 引用本文： | 练有南,化经纬,杜建中. 分光光度法测定市售白酒中甲醇含量[J]. 湛江师范学院学报, 2014, 0(3): 67-71 |
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| 作者姓名： | 练有南 化经纬 杜建中 |
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| 作者单位： | 湛江师范学院化学科学与技术学院,广东湛江524048 |
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| 摘 要： | 利用高锰酸钾将甲醇氧化成甲醛,甲醛与变色酸在浓硫酸条件下反应生成蓝紫色络合物,建立了分光光度法测定白酒中甲醇含量的方法,探究了测定甲醇的最佳条件.甲醇含量在0.005g/L0.12g/L范围内具有良好的线性关系(R2=0.994).该方法操作简单,结果较准确,易于推广.
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| 关 键 词： | 分光光度法 变色酸 甲醇 白酒 |
Spectrophotometry Determination of Methanol Content in Distilled Spirits |
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| LIAN Younan,HUA Jingwei,DU Jianzhong. Spectrophotometry Determination of Methanol Content in Distilled Spirits[J]. Journal of Zhanjiang Normal College, 2014, 0(3): 67-71 |
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| Authors: | LIAN Younan HUA Jingwei DU Jianzhong |
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| Affiliation: | (School of Chemistry Science and Technology, Zhanjiang Normal College, Zhanjiang 524048, Guangdong, China) |
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| Abstract: | Using potassium permanganate and methanol reaction of formaldehyde,Formaldehyde in sulfuric acid medium to react with chromotropic acid to produce the violet complex,established a spectro-photometry method was developed for the determination of methanol content in liquor .To explore the best conditions of the determination of methanol,methanol content in 0.05 g/L - 1.4 g/L range has a good linear relationship （R2= 0.995）.The method has high accuracy,simple operation,simple calculation,the characteristics of easy to promote. |
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| Keywords: | spectrophotometry chromotropic acid methanol distilled spirit |
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