A QMB-based temperature-modulated ammonia sensor for humid air

Authors
Schramm, U Meinhold, D Winter, S Heil, C Muller-Albrecht, J Wachter, L Hoff, H Roesky, CEO Rechenbach, T Boeker, P Lammers, PS Weber, E Bargon, J
Citation
U. Schramm et al., A QMB-based temperature-modulated ammonia sensor for humid air, SENS ACTU-B, 67(3), 2000, pp. 219-226
Citations number
13
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences","Instrumentation & Measurement
Journal title
SENSORS AND ACTUATORS B-CHEMICAL
ISSN journal
09254005 → ACNP
Volume
67
Issue
3
Year of publication
2000
Pages
219 - 226
Database
ISI
SICI code
0925-4005(20000901)67:3<219:AQTASF>2.0.ZU;2-6
Abstract
A temperature-modulated sensor for ammonia based upon two quartz microbalan ces (QMBs) has been developed. One sensor element is coated with the tris-d iethylammonium salt of 4,4',4"-[benzene-1,3,5-triyl-tri(ethin-2,1-diyl)trib enzoic acid (SPCA) [D. Meinhold, Thesis, Institute of Organic Chemistry, Mi ning Institute of Technology, Freiberg/Saxony, Germany, 1999.], which serve s to detect ammonia, but shows a cross-sensitivity to humidity. To compensa te for the influence of the latter, a sensor element coated with poly[ethyl ene imine] (PEI) functions as a humidity sensor. (C) 2000 Elsevier Science S.A. All rights reserved.