乙酰丙酮-目视判读法快速测定白酒中甲醇的含量
目的 建立了乙酰丙酮-目视判读法快速测定白酒中甲醇的方法。方法 采用乙酰丙酮法, 白酒中甲醇经高锰酸钾氧化, 草酸还原过量高猛酸钾后, 在沸水浴中与乙酰丙酮发生反应, 并对分析条件进行了探讨优化, 对酒精度影响和干扰因素进行了深入研究并提出了解决办法。结果 对优化后的分析条件进行了多个实验室间验证。本快速检验方法灵敏度为100%, 特异性为≥94%, 假阴性为0%, 假阳性率为≤6.0%, 相对准确度≥98.5%, 满足要求。结论 该方法灵敏、准确、快速, 适用于白酒中甲醇的含量的现场快速检测。
Objective To establish a rapid method for determination of methanol in liquor by acetylacetone - visual judgement. Methods Adopting acetylacetone method, the methanol in liquor was oxidized by potassium permanganate, and after excess oxalic acid was reduced to potassium permanganate, it reacted with acetylacetone in a boiling water bath. The analysis conditions were discussed and optimized, and the influence and interference factors of alcohol content were studied in depth and solutions were put forward. Results The optimized analytical conditions were verified in several laboratories. The sensitivity of this rapid test method was 100%, the specificity was ≥94%, the false negative was 0%, the false positive rate was ≤6.0%, and the relative accuracy was ≥98.5%, which met the requirements. Conclusion The method is sensitive, accurate and fast, which is suitable for the field rapid detection of methanol content in liquor.
标题：乙酰丙酮-目视判读法快速测定白酒中甲醇的含量
英文标题：Rapid determination of methanol in liquor by acetylacetone-visual judgement
作者：
姚欢 四川省食品药品检验检测院
余晓琴 四川省食品药品检验检测院
刘美 四川省食品药品检验检测院
杜钢 四川省食品药品检验检测院
中文关键词:乙酰丙酮,甲醇,白酒,目视判读,现场快速检测,
英文关键词:acetylacetone,methanol,sprirts,visual judgement,field fast measurement,
发表日期：2019-10-27
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