Issue 4, 2006

Ultrasound-enhanced flow injection chemiluminescence for determination of hydrogen peroxide

Abstract

A novel ultrasonic flow injection chemiluminescence (FI-CL) manifold for determining hydrogen peroxide (H2O2) has been designed and evaluated. Chemiluminescence obtained from the luminol–H2O2–cobalt(II) reaction was enhanced by applying 120 W of ultrasound for a period of 4 s to the reaction coil in the FI-CL system and this enhancement was verified by comparison with an identical manifold without ultrasound. The system was developed for determining ultra-trace levels of H2O2 and a calibration curve was obtained with a linear portion over the range of 10–200 nmol L−1 H2O2 (correlation coefficient 0.9945). The detection limit (3σ) and the quantification limit (LOQ) were found to be 1 × 10−9 and 3.3 × 10−9 mol L−1 respectively and the relative standard deviation was 1.37% for 2 × 10−7 mol L−1 H2O2 (n = 10). The method was applied to the determination of trace amounts of H2O2 in purified water and natural water samples without any special pre-treatments.

Graphical abstract: Ultrasound-enhanced flow injection chemiluminescence for determination of hydrogen peroxide

Article information

Article type
Paper
Submitted
27 Sep 2005
Accepted
15 Dec 2005
First published
18 Jan 2006

Analyst, 2006,131, 501-508

Ultrasound-enhanced flow injection chemiluminescence for determination of hydrogen peroxide

G. M. Greenway, T. Leelasattarathkul, S. Liawruangrath, R. A. Wheatley and N. Youngvises, Analyst, 2006, 131, 501 DOI: 10.1039/B513735G

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