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 language | English (US) |
|---|---|
| Pages (from-to) | 4046-4047 |
| Number of pages | 2 |
| Journal | Journal of the American Chemical Society |
| Volume | 132 |
| Issue number | 12 |
| DOIs | |
| State | Published - Mar 31 2010 |
ASJC Scopus subject areas
- Catalysis
- General Chemistry
- Biochemistry
- Colloid and Surface Chemistry
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