Please use this identifier to cite or link to this item: http://hdl.handle.net/2445/124142
Title: Colorimetric sensor for bad odor detection using automated color correction
Author: Schmitt, K.
Tarantik, k.
Pannek, C.
Benito Altamirano, I.
Casals Guillén, Olga
Romano Rodríguez, Alberto
Wöllenstein, J.
Prades García, Juan Daniel
Keywords: Colorimetria
Amoníac
Colorimetry
Ammonia
Issue Date: 2-Jun-2017
Abstract: Colorimetric sensors based on color-changing dyes offer a convenient approach for the quantitative measurement of gases. An integrated, mobile colorimetric sensor can be particularly helpful for occasional gas measurements, such as informal air quality checks for bad odors. In these situations, the main requirement is high availability, easy usage, and high specificity towards one single chemical compound, combined with cost-efficient production. In this contribution, we show how a well stablished colorimetric method can be adapted for easy operation and readout, making it suitable for the untrained end user. As an example, we present the use of pH indicators for the selective and reversible detection of NH3 in air (one relevant gas contributing to bad odors) using gas-sensitive layers dip coated on glass substrates. Our results show that the method can be adapted to detect NH3 concentrations lower than 1 ppm, with measure-to-result times in the range of a few minutes. We demonstrate that the color measurements can be carried out with the optical signals of RGB sensors, without losing quantitative performance.
Note: Reproducció del document publicat a: http://dx.doi.org/10.1117/12.2265990
It is part of: Proceedings Smart Sensors, Actuators, and MEMS VIII, 2017, vol. 10246, num. 102461F
Comunicació presentada a: SPIE Microtechnologies. Advances in nanotechnology and microtechnology systems applications. May 8 to 10, 2017. Barcelona, Spain
Related resource: http://dx.doi.org/10.1117/12.2265990
URI: http://hdl.handle.net/2445/124142
Appears in Collections:Articles publicats en revistes (Institut de Nanociència i Nanotecnologia (IN2UB))
Comunicacions a congressos (Electrònica)
Publicacions de projectes de recerca finançats per la UE

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