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.
DepartmentMassachusetts Institute of Technology. Department of Chemistry
American Chemical Society (ACS)
He, Maggie et al. “Chemiresistive Carbon Nanotube Sensors for N-Nitrosodialkylamines.” ACS sensors 4 (2019): 2819-2844 © 2019 The Author(s)
Author's final manuscript