The use of dosimeters to measure radical production in aqueous sonochemical systems

Gareth J. Price; Emma J. Lenz

doi:10.1016/0041-624X(93)90055-5

The use of dosimeters to measure radical production in aqueous sonochemical systems

Gareth J. Price, Emma J. Lenz

Department of Chemistry

University of Bath

Research output: Contribution to journal › Article › peer-review

Abstract

The use of two dosimeter systems for quantifying radical production during aqueous sonochemical processes has been investigated. The Fricke (Fe²⁺/Fe³⁺) system was found to be useful at higher concentrations but care must be taken in interpreting the results since radical production is not the only process taking place. There is some reaction even in the absence of ultrasound and this involves dissolved oxygen gas. The concentration of hydroxyl radicals formed was accurately monitored at low concentrations using the terephthalate dosimeter and the limits of its applicability were found. Both systems were used to investigate the effect of varying the ultrasound intensity.

Original language	English
Pages (from-to)	451-456
Number of pages	6
Journal	Ultrasonics
Volume	31
Issue number	6
DOIs	https://doi.org/10.1016/0041-624X(93)90055-5
Publication status	Published - Nov 1993

Keywords

dosimeters
radical production
sonochemistry

ASJC Scopus subject areas

Acoustics and Ultrasonics

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10.1016/0041-624X(93)90055-5

Cite this

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AB - The use of two dosimeter systems for quantifying radical production during aqueous sonochemical processes has been investigated. The Fricke (Fe2+/Fe3+) system was found to be useful at higher concentrations but care must be taken in interpreting the results since radical production is not the only process taking place. There is some reaction even in the absence of ultrasound and this involves dissolved oxygen gas. The concentration of hydroxyl radicals formed was accurately monitored at low concentrations using the terephthalate dosimeter and the limits of its applicability were found. Both systems were used to investigate the effect of varying the ultrasound intensity.

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KW - sonochemistry

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DO - 10.1016/0041-624X(93)90055-5

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ER -

The use of dosimeters to measure radical production in aqueous sonochemical systems

Abstract

Keywords

ASJC Scopus subject areas

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