Jump to main content
Jump to site search

Issue 14, 2011
Previous Article Next Article

Evaluation of coated QCM for the detection of atmospheric ozone

Author affiliations

Abstract

A coated acoustic wave sensor has been developed to selectively detect atmospheric ozone. The selective detection has been assessed using a variety of coatings: beeswax, gallic acid, indigo carmine, polybutadiene, potassium iodide and sodium nitrite. Polybutadiene was the most sensitive with a limit of detection of 55 ppb. The sensitivity was improved by operating at higher harmonics and was shown to increase linearly with harmonic up to the 11th harmonic. This novel work shows that ozone detection can be improved by operating at the crystal's harmonic frequencies and in conjunction with a suitable flow rate, a potentially highly sensitive and fast response sensor can be created based on acoustic wave technology.

Graphical abstract: Evaluation of coated QCM for the detection of atmospheric ozone

Back to tab navigation

Publication details

The article was received on 09 Feb 2011, accepted on 23 May 2011 and first published on 07 Jun 2011


Article type: Paper
DOI: 10.1039/C1AN15106A
Citation: Analyst, 2011,136, 2963-2968
  •   Request permissions

    Evaluation of coated QCM for the detection of atmospheric ozone

    J. B. A. Muller, C. E. Smith, M. I. Newton and C. J. Percival, Analyst, 2011, 136, 2963
    DOI: 10.1039/C1AN15106A

Search articles by author

Spotlight

Advertisements