A new sensor for the assessment of personal exposure to volatile organic compounds

Authors
Chen, Cheng; Driggs Campbell, Katherine; Negi, Indira; Iglesias, Rodrigo Alejandro; Owens, Patrick; Tao, Nongjian; Tsow, Francis; Forzani, Erica S.
Publication Year
2012
Language
English
Format
article
Status
Published version
Description
To improve our understanding of indoor and outdoor personal exposures to common environmental toxicants released into the environment, new technologies that can monitor and quantify the toxicants anytime anywhere are needed. This paper presents a wearable sensor to provide such capabilities. The sensor can communicate with a common smart phone and provides accurate measurement of volatile organic compound concentration at a personal level in real-time, providing environmental toxicants data every three minutes. The sensor has high specificity and sensitivity to aromatic, alkyl, and chlorinated hydrocarbons with a resolution as low as 4 parts-per-billion (ppb), with a detection range of 4 ppb-1000 ppm (parts-per-million). The sensor's performance was validated using Gas Chromatography and Selected Ion Flow Tube - Mass Spectrometry reference methods in a variety of environments and activities with overall accuracy higher than 81% (r 2 > 0.9). Field tests examined personal exposure in various scenarios including: indoor and outdoor environments, traffic exposure in different cities which vary from 0 to 50 ppmC (part-per-million carbon from hydrocarbons), and pollutants near the 2010 Deepwater Horizon's oil spill. These field tests not only validated the performance but also demonstrated unprecedented high temporal and spatial toxicant information provided by the new technology. © 2012 Elsevier Ltd.
Fil: Chen, Cheng. Arizona State University; Estados Unidos
Fil: Driggs Campbell, Katherine. Arizona State University; Estados Unidos
Fil: Negi, Indira. Arizona State University; Estados Unidos
Fil: Iglesias, Rodrigo Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Arizona State University; Estados Unidos
Fil: Owens, Patrick. Shell Oil Products US; Estados Unidos
Fil: Tao, Nongjian. Arizona State University; Estados Unidos
Fil: Tsow, Francis. Arizona State University; Estados Unidos
Fil: Forzani, Erica S.. Arizona State University; Estados Unidos
Subject
AIR MONITORING
ENVIRONMENTAL HEALTH
INDOOR AIR QUALITY
PERSONAL EXPOSURE ASSESSMENT
REAL-TIME SENSOR
WIRELESS AND WEARABLE INTEGRATED SENSOR
Otras Ciencias Químicas
Ciencias Químicas
CIENCIAS NATURALES Y EXACTAS
Access level
Restricted access
License
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repository
CONICET Digital (CONICET)
Institution
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identifier
oai:ri.conicet.gov.ar:11336/61770