Hydrogen peroxide detection in wet air with a Prussian Blue based solid salt bridged three electrode system

M.A. Komkova, E.E. Karyakina, F. Marken, A.A. Karyakin

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

We report on a novel electroanalytical system for hydrogen peroxide (H O) detection in humidity or droplets of aerosol, formed by air bubbling through a washing chamber; the resulting flow mimics the exhaled human breath. The system is based on a planar three-electrode structure (with a Prussian Blue based HO transducer modified working electrode) bridged by a solid salt-saturated filament material (filter paper, cotton textile). Respective to the hydrogen peroxide content in the washing valve, the response of the aerosol-sensing system is linear in the concentration range of 0.1-10 μM, which overlaps the generally accepted H O content in exhaled breath condensate (EBC), with the sensitivity of 8 A M cm. The response to the upper limit of the calibration range is stable for more than 50 injection cycles recorded within 3 days. Both the stability and the suitable calibration range allow one to consider the reported aerosol-sensing system as a prototype for a simple (avoiding intermediate EBC collection) noninvasive diagnostic tool for pulmonary patients.
Original languageEnglish
Pages (from-to)2574-2577
Number of pages4
JournalAnalytical Chemistry
Volume85
Issue number5
Early online date2 Feb 2013
DOIs
Publication statusPublished - 5 Mar 2013

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