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Gasochromic detection of NO2 on the example of the food additive E141 (ii)

 
: Pannek, Carolin; Tarantik, Karina; Engel, Laura; Vetter, Thomas; Wöllenstein, Jürgen

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Fulltext ()

Proceedings. MDPI AG 2 (2018), No.13, Art. 721, 4 pp.
ISSN: 2504-3900
Eurosensors Conference <32, 2018, Graz>
Bundesministerium für Bildung und Forschung BMBF
13N14076; GAS-O-CHROM
English
Journal Article, Conference Paper, Electronic Publication
Fraunhofer IPM ()
optical NO2 detection; gasochromic color dye; copper chlorophyllin; screen printing

Abstract
We present our investigation on the gasochromic reaction of E141 (ii) towards the toxic gas nitrogen dioxide (NO2). E141 (ii) is a chlorophyllin-based food additive, typically used as green coloring for nearly all kinds of sweets. In this presentation we show an alternative approach for using E141 (ii) as optical gas indicator. All solid samples are prepared by multi-layer screen printing on different substrates like paper and PE-foil. Gas measurements are performed using an UV/Vis spectrometer. The influence of the substrate and according layer thickness is shown.

: http://publica.fraunhofer.de/documents/N-521523.html