P1.8.13 Peat as an alternative material for use in ammonia sensors
- Event
- 14th International Meeting on Chemical Sensors - IMCS 2012
2012-05-20 - 2012-05-23
Nürnberg/Nuremberg, Germany - Chapter
- P1.8 Sensors Based on New Materials
- Author(s)
- N. Ribeiro - Instituto Federal de Mato Grosso (Brazil), N. Pereira - Insituto de Química da Universidade de Brasíli (Brazil), H. Guimarães, G. Sandri, A. Ceschin - Departamento de Engenharia Elétrica da Universidade de Brasília (Brazil)
- Pages
- 1148 - 1150
- DOI
- 10.5162/IMCS2012/P1.8.13
- ISBN
- 978-3-9813484-2-2
- Price
- free
Abstract
This work consists in a study of an alternative material to be use for the development of ammonia sensors. The humin is extracted from peat with centrifugation of KOH or NaOH solutions. The humin consists basically of carbon. The powder of humin is a porous material, similar to zeolita, and it is partly solubilized in water. The solubilized humin is deposited on a flexible polyester substrate and dried in an oven at 80ºC for 20 minutes. The samples'sensitivity to ammonia vapor was measured using the standard two-temperature method.