Chemiresistive Carbon Nanotube Sensors for N-Nitrosodialkylamines
Author(s)
He, Maggie; Croy, Robert G; Essigmann, John M.; Swager, Timothy M
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N-Nitrosamines are environmental genotoxicants that are widely encountered in air, water, and food. Contamination of indoor and outdoor air with N-nitrosamines has been reported on many occasions. Conventional detection of airborne N-nitrosamines requires sophisticated instrumentation, field sampling, and laboratory analysis. Herein, we report ultrasensitive carbon nanotube based chemiresistive sensors utilizing a cobalt(III) tetraphenylporphyrin selector element for the detection of N-nitrosamines. Concentrations as low as 1 ppb N-nitrosodimethylamine, N-nitrosodiethylamine, and N-nitrosodibutylamine were detected. We also demonstrate the integration of these sensors with a field deployable sensing node wherein the sensor response can be read online remotely.
Date issued
2019-10Department
Massachusetts Institute of Technology. Department of ChemistryJournal
ACS sensors
Publisher
American Chemical Society (ACS)
Citation
He, Maggie et al. “Chemiresistive Carbon Nanotube Sensors for N-Nitrosodialkylamines.” ACS sensors 4 (2019): 2819-2844 © 2019 The Author(s)
Version: Author's final manuscript
ISSN
2379-3694