Chemiresistive Carbon Nanotube Sensors for N-Nitrosodialkylamines

被引：41

作者：

He, Maggie ^{[1
]}

Croy, Robert G. ^{[1
,2
,3
]}

Essigmann, John M. ^{[1
,2
,3
]}

Swager, Timothy M. ^{[1
]}

机构：

[1] MIT, Dept Chem, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[2] MIT, Dept Biol Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA

[3] MIT, Ctr Environm Hlth Sci, 77 Massachusetts Ave, Cambridge, MA 02139 USA

来源：

ACS SENSORS | 2019年 / 4卷 / 10期

基金：

美国国家卫生研究院;

关键词：

carbon nanotubes; chemiresistive; sensors; N-nitrosamines; N-nitrosodimethylamine; N-nitrosodiethylamine; N-nitrosodibutylamine; NITROSODIMETHYLAMINE NDMA; NITRAMINE FORMATION; NITROSAMINES; GAS; RUBBER; FUNCTIONALIZATION; COMPLEXES; EXPOSURE; CAPTURE; SWCNTS;

D O I：

10.1021/acssensors.9b01532

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：2819 / 2824

页数：11

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