A simple and highly sensitive colorimetric detection method for gaseous formaldehyde

Liang Feng, Christopher J. Musto, Kenneth S. Suslick

Research output: Contribution to journalArticlepeer-review

Abstract

A colorimetric detection method using amine-functionalized polymer films doped with a pH indicator has been developed for the rapid, sensitive, and quantitative detection of gaseous formaldehyde at concentrations well below the immediately dangerous to life or health (IDLH) limit. In 1 min, visible color changes are easily observed, even down to the permissible exposure limit (PEL) at 750 ppb. The limit of detection is below 50 ppb (7% of the PEL) after 10 min of exposure. This sensor is essentially unaffected by changes in humidity or temperature (4 to 50 °C) and is not sensitive to common interferents.

Original languageEnglish (US)
Pages (from-to)4046-4047
Number of pages2
JournalJournal of the American Chemical Society
Volume132
Issue number12
DOIs
StatePublished - Mar 31 2010

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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