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Colorimetric detection of hydrogen sulfide in ambient air

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

Fulltext ()

Proceedings. MDPI AG 2 (2018), No.13, Art. 804, 4 pp.
ISSN: 2504-3900
Eurosensors Conference <32, 2018, Graz>
Journal Article, Conference Paper, Electronic Publication
Fraunhofer IPM ()
colorimetric sensor; hydrogen sulfide detection; Cu-PAN complex; screen printing

We present a fast method to monitor hydrogen sulfide (H2S) in ambient air based on a visible color change. Therefore, an immobilized copper(II) complex of the azo dye 1-(2-pyridylazo)-2-naphtol (H-PAN) was synthesized and prepared in a matrix for screen printing. Different materials, reaching from opaque paper to transparent foils served as substrate. The reaction of the copper(II) complex (Cu-PAN) to the target gas H2S was measured in reflection via UV/VIS spectroscopy.