Chemiresistive Carbon Nanotube Sensors for N-Nitrosodialkylamines
Name
nihms-1062498.pdf
Description
Accepted version
Size
669.37 KB
Format
Adobe PDF
Checksum (MD5)
188d333aa810df2864b53f5f6449c0a9
Author(s)
He, Maggie
Croy, Robert G
Essigmann, John M.
Swager, Timothy M
Date Issued
October 2019
Journal
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
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Department of Chemistry
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Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use.
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DOI of Published Version
https://doi.org/10.1021/acssensors.9b01532
