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Flow-through amperometric sensor for hydrogen peroxide monitoring in gaseous media

✍ Scribed by J. Kulys

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
471 KB
Volume
9
Category
Article
ISSN
0925-4005

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✦ Synopsis

An amperometric flow-through sensor for the determination of hydrogen peroxide in gaseous media over the range 0.05-1.0 mg/m3 (0.03-0.66 ppmv) is described. The standard error of hydrogen peroxide determination is 3.5-Q?% at concentrations of 0.05-0.2 mg/m3 and 0.6-1.8% at higher hydrogen peroxide concentrations. The limit of hydrogen peroxide detection is 0.01 ppmv. The response time of the sensor at high concentrations of hydrogen peroxide is less than 1 mitt; the volume of gaseous media under investigation is l-l.5 1.

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✍ Hans LundbΓ€ck πŸ“‚ Article πŸ“… 1983 πŸ› Elsevier Science 🌐 English βš– 503 KB

The hydrogen peroxide is oxidized at + 1.5 V vs. SCE at a glassy carbon electrode of the wall-jet type. The samples are diluted about 100 times in a dispersion coil before entering the amperometric detector. The calibration curve is linear from 10' to 1 M H&j,, when 5-rl samples are used. With 50-rl