| 白酒中甲醇含量测定方法的改进 |
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| 引用本文： | 王刚,贾丽锋.白酒中甲醇含量测定方法的改进[J].农业工程,2017,7(3):92-94. |
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| 作者姓名： | 王刚 贾丽锋 |
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| 作者单位： | 南阳出入境检验检疫局，南阳473000 |
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| 基金项目： | 河南省科技攻关计划项目(17210231056)，南阳市科技攻关计划项目(2015KJGG25 |
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| 摘 要： | 为了改进白酒中甲醇含量的测定方法，采用品红亚硫酸法对白酒中甲醇含量进行测定，系统分析该法测定中存在的干扰并探讨草酸-硫酸加入量、显色温度和显色时间等环节对试验结果的影响。试验结果表明，草酸-硫酸加入量为0.5 mL，显色温度20~25 ℃和显色时间30 min，为最佳测定条件。改进后的测定方法使甲醇含量测定试验结果更准确、重现性更好。
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| 关 键 词： | 白酒 甲醇含量 测定条件 改进 |
Improvement of Determination Method for Methanol Content in Liquor |
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| Wang Gang and Jia Lifeng.Improvement of Determination Method for Methanol Content in Liquor[J].Agricultural Engineering,2017,7(3):92-94. |
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| Authors: | Wang Gang and Jia Lifeng |
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| Abstract: | To improve determination method of methanol content in liquor，using magenta sulphurous acid method for determination of methanol content in liquor，interference in the determination was analyzed systematically，and effect of amount of oxalic acid-sulfuric acid addition，color rendering temperature and color time on the test results was discussed.It was concluded that the amount of oxalic acid-sulfuric acid was 0.5 mL，color temperature 20~25 ℃ and chromogenic time 30 min，as the best determination conditions.The improved determination method could make methanol content determination of experimental results more accurate and better reproducibility. |
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