Differential-pulse polarographic microdetermination of ethanol and its application to beer analysis

Wing Hong Chan; Albert W M Lee; Pei Xiang Cai

doi:10.1039/an9921701509

Differential-pulse polarographic microdetermination of ethanol and its application to beer analysis

Wing Hong Chan^*, Albert W M Lee, Pei Xiang Cai

^*Corresponding author for this work

Department of Chemistry

Research output: Contribution to journal › Journal article › peer-review

21 Citations (Scopus)

Abstract

Ethanol, after in situ derivatization to ethyl dithiocarbonate under phase-transfer catalysis, was determined in aqueous solution by differential-pulse polarography. A supporting electrolyte of NH ₄Cl-KH₂PO₄-NaOH containing eosin was found to be essential in this determination. For the microdetermination of ethanol, this method was proved to be precise, and the detection limit was 0.02% or 0.02 mg (absolute amount of ethanol). The viability of the proposed method for beer analysis has also been established.

Original language	English
Pages (from-to)	1509-1512
Number of pages	4
Journal	Analyst
Volume	117
Issue number	9
DOIs	https://doi.org/10.1039/an9921701509
Publication status	Published - 1992

Scopus Subject Areas

Analytical Chemistry
Biochemistry
Environmental Chemistry
Spectroscopy
Electrochemistry

User-Defined Keywords

Beer analysis
Differential-pulse polarography
Ethanol determination
In situ generation of dithiocarbonate
Organic functional group analysis

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10.1039/an9921701509

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title = "Differential-pulse polarographic microdetermination of ethanol and its application to beer analysis",

abstract = "Ethanol, after in situ derivatization to ethyl dithiocarbonate under phase-transfer catalysis, was determined in aqueous solution by differential-pulse polarography. A supporting electrolyte of NH 4Cl-KH2PO4-NaOH containing eosin was found to be essential in this determination. For the microdetermination of ethanol, this method was proved to be precise, and the detection limit was 0.02% or 0.02 mg (absolute amount of ethanol). The viability of the proposed method for beer analysis has also been established.",

keywords = "Beer analysis, Differential-pulse polarography, Ethanol determination, In situ generation of dithiocarbonate, Organic functional group analysis",

author = "Chan, {Wing Hong} and Lee, {Albert W M} and Cai, {Pei Xiang}",

year = "1992",

doi = "10.1039/an9921701509",

language = "English",

volume = "117",

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T1 - Differential-pulse polarographic microdetermination of ethanol and its application to beer analysis

AU - Chan, Wing Hong

AU - Lee, Albert W M

AU - Cai, Pei Xiang

PY - 1992

Y1 - 1992

N2 - Ethanol, after in situ derivatization to ethyl dithiocarbonate under phase-transfer catalysis, was determined in aqueous solution by differential-pulse polarography. A supporting electrolyte of NH 4Cl-KH2PO4-NaOH containing eosin was found to be essential in this determination. For the microdetermination of ethanol, this method was proved to be precise, and the detection limit was 0.02% or 0.02 mg (absolute amount of ethanol). The viability of the proposed method for beer analysis has also been established.

AB - Ethanol, after in situ derivatization to ethyl dithiocarbonate under phase-transfer catalysis, was determined in aqueous solution by differential-pulse polarography. A supporting electrolyte of NH 4Cl-KH2PO4-NaOH containing eosin was found to be essential in this determination. For the microdetermination of ethanol, this method was proved to be precise, and the detection limit was 0.02% or 0.02 mg (absolute amount of ethanol). The viability of the proposed method for beer analysis has also been established.

KW - Beer analysis

KW - Differential-pulse polarography

KW - Ethanol determination

KW - In situ generation of dithiocarbonate

KW - Organic functional group analysis

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DO - 10.1039/an9921701509

M3 - Journal article

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SN - 0003-2654

VL - 117

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EP - 1512

JO - Analyst

JF - Analyst

IS - 9

ER -

Differential-pulse polarographic microdetermination of ethanol and its application to beer analysis

Abstract

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