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

Research output: Contribution to journalArticlepeer-review

20 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 languageEnglish
Pages (from-to)1509-1512
Number of pages4
JournalThe Analyst
Volume117
Issue number9
DOIs
Publication statusPublished - 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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