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Reference type: Journal
Authors: Chen C, Driggs Campbell K, Negi I, Iglesias RA, Owens P, Tao NJ, Tsow F, Forzani ES
Article Title: A new sensor for the assessment of personal exposure to volatile organic compounds.
Publication date: 2012
Journal: Atmospheric Environment
Volume: 54
Issue: (1)
Page numbers: 679-687.
DOI: 10.1016/j.atmosenv.2012.01.048
Alternative URL: http://www.sciencedirect.com/science/article/pii/S1352231012000696

Abstract: 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% (r2 > 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
Template and target information: volatile organic compounds, VOCs
Author keywords: Air monitoring, environmental health, Indoor air quality, Real-time sensor, Personal exposure assessment, Wireless and wearable integrated sensor

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