| Title: | Evaluation of a Commercial Electronic Nose Based on Carbon Nanotube Chemiresistors |
| Author(s): | Peters R; Beijer N; Hul BV; Bruijns B; Munniks S; Knotter J; |
| Address: | "Lectorate Technologies for Criminal Investigations, Saxion University of Applied Sciences, Handelskade 75, 7417 DH Deventer, The Netherlands. Academy of Applied Biosciences and Chemistry, HAN University of Applied Sciences, Laan van Scheut 2, 6525 EM Nijmegen, The Netherlands. Wageningen Food Safety Research, Wageningen University and Research, Akkermaalsbos 2, 6708 WB Wageningen, The Netherlands. Dutch Police Academy, Arnhemseweg 348, 7334 AC Apeldoorn, The Netherlands" |
| ISSN/ISBN: | 1424-8220 (Electronic) 1424-8220 (Linking) |
| Abstract: | "Recently a hand-held, carbon-nanotube-based electronic nose became available on the market. Such an electronic nose could be interesting for applications in the food industry, health monitoring, environmental monitoring, and security services. However, not much is known about the performance of such an electronic nose. In a series of measurements, the instrument was exposed to low ppm vapor concentrations of four volatile organic compounds with different scent profiles and polarities. Detection limits, linearity of response, repeatability, reproducibility, and scent patterns were determined. The results indicate detection limits in the range of 0.1-0.5 ppm and a linear signal response in the range of 0.5-8.0 ppm. The repeatability of the scent patterns at compound concentrations of 2 ppm allowed the identification of the tested volatiles based on their scent pattern. However, the reproducibility was not sufficient, since different scent profiles were produced on different measurement days. In addition, it was noted that the response of the instrument diminished over time (over several months) possibly by sensor poisoning. The latter two aspects limit the use of the current instrument and make future improvements necessary" |
| Keywords: | "*Nanotubes, Carbon Electronic Nose Pheromones Odorants Environmental Monitoring *Volatile Organic Compounds VOCs carbon nanotubes chemiresistors;" |
| Notes: | "PubMed-not-MEDLINEPeters, Ruud Beijer, Niels 't Hul, Bauke van Bruijns, Brigitte Munniks, Sandra Knotter, Jaap eng Switzerland 2023/06/10 Sensors (Basel). 2023 Jun 2; 23(11):5302. doi: 10.3390/s23115302" |
