Colorimetric Recognition of Aldehydes and Ketones

Zheng Li, Ming Fang, Maria K. LaGasse, Jon R. Askim, Kenneth S. Suslick

Research output: Contribution to journalArticlepeer-review


A colorimetric sensor array has been designed for the identification of and discrimination among aldehydes and ketones in vapor phase. Due to rapid chemical reactions between the solid-state sensor elements and gaseous analytes, distinct color difference patterns were produced and digitally imaged for chemometric analysis. The sensor array was developed from classical spot tests using aniline and phenylhydrazine dyes that enable molecular recognition of a wide variety of aliphatic or aromatic aldehydes and ketones, as demonstrated by hierarchical cluster, principal component, and support vector machine analyses. The aldehyde/ketone-specific sensors were further employed for differentiation among and identification of ten liquor samples (whiskies, brandy, vodka) and ethanol controls, showing its potential applications in the beverage industry.

Original languageEnglish (US)
Pages (from-to)9860-9863
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number33
StatePublished - Aug 7 2017


  • aldehydes
  • colorimetric sensor arrays
  • ketones
  • liquors

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)


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