Determination of Ethanol in Alcoholic Drinks: Flow Injection Analysis with Amperometric Detection Versus Portable Raman Spectrometer,Electroanalysis

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Determination of Ethanol in Alcoholic Drinks: Flow Injection Analysis with Amperometric Detection Versus Portable Raman Spectrometer
Electroanalysis ( IF 2.7 ) Pub Date : 2020-05-27 , DOI: 10.1002/elan.202060114
Granit Jashari ₁ , Ivan Švancara ₁ , Milan Sýs ₁

Affiliation

A flow injection analysis with integrated amperometric alcohol dehydrogenase biosensor and a handheld Mira‐DS Raman spectrometer have been compared for the determination of ethanol in different samples of alcoholic drinks. The biosensor was constructed from the commercial screen‐printed carbon electrode as amperometric transducer and covered by a thin layer comprising alcohol dehydrogenase, reduced single‐layer graphene oxide, rhodium(IV) dioxide, and glutaraldehyde. Both assemblies were tested on analysis of plum brandy, white rum, vodka, white and red wines, strong dark beer, and non‐alcoholic beer. The two principally different analytical methods were critically compared and some limitations found, especially in case of analysis of red wine and beers. Finally, some future improvements of both analytical tools under test outlined.

中文翻译：

酒精饮料中乙醇的测定：安培检测与便携式拉曼光谱仪的流动注射分析

使用集成的电流型酒精脱氢酶生物传感器和手持式Mira-DS拉曼光谱仪对流动注射分析进行了比较，以测定不同酒精饮料样品中的乙醇。生物传感器由商业的丝网印刷碳电极作为安培传感器构建而成，并覆盖着一层薄薄的层，该层包括乙醇脱氢酶，还原的单层氧化石墨烯，二氧化铑（IV）和戊二醛。两种组件都经过了李子白兰地，白朗姆酒，伏特加酒，白葡萄酒和红葡萄酒，浓黑啤酒和无酒精啤酒的分析测试。严格比较了两种主要不同的分析方法，发现了一些局限性，特别是在分析红酒和啤酒的情况下。最后，概述了两种测试工具的未来改进。

更新日期：2020-05-27

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