Jump to main content
Jump to site search

Issue 6, 2009
Previous Article Next Article

Microwave spectra of mixtures of non-absorbing solid particles and absorbing liquids

Author affiliations

Abstract

Microwave spectroscopy of condensed phases is sensitive to sample compositional factors such as water or fat content, solids content and salt concentration which leads to applications for in-line process monitoring. In this paper we show that microwave spectra can also be sensitive to sample structure at fixed composition which has implications for analytical applications involving samples which are multi-phase mixtures. We have measured microwave spectra for samples containing a constant volume fraction of non-absorbing glass spheres immersed within an absorbing liquid phase; the only difference between samples is the mean diameter of the glass spheres. The large differences in the spectra for different diameters is successfully modelled in terms of the relative volume fractions of glass and absorbing liquid within a measurement penetration depth adjacent to the microwave measuring probe.

Graphical abstract: Microwave spectra of mixtures of non-absorbing solid particles and absorbing liquids

Back to tab navigation

Publication details

The article was received on 06 Oct 2008, accepted on 07 Nov 2008 and first published on 16 Dec 2008


Article type: Paper
DOI: 10.1039/B817507A
Phys. Chem. Chem. Phys., 2009,11, 958-962

  •   Request permissions

    Microwave spectra of mixtures of non-absorbing solid particles and absorbing liquids

    P. D. I. Fletcher, D. D. Grice and S. J. Haswell, Phys. Chem. Chem. Phys., 2009, 11, 958
    DOI: 10.1039/B817507A

Search articles by author

Spotlight

Advertisements