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Proceedings Paper

Remote sensing of on-road motor vehicle emissions by DOAS and TDLAS techniques
Author(s): Jianguo Liu; Wenqing Liu; Fengzhong Dong; Pinhua Xie; Yujun Zhang; Qingnong Wei
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Paper Abstract

In the past decade interest has focused on the remote analysis of emissions from motor vehicles using spectrometric techniques, driven by recognition of the fact that a very large proportion of the environmental damage done in this way originates with a small percentage of vehicles. Several instrumentation manufacturers now market such devices, and others are developing new technologies that will offer opportunities for enhanced performance and lower cost. In this paper we demonstrate the prototype design of vehicle emission remote sensing system by differential optical absorption spectroscopy (DOAS) and tunable diode laser absorption spectroscopy (TDLAS). In this design, vehicle emissions will be measured when they past a on road remote sensing station while driving along a road. The concentrations of hydrocarbons (HC) and Oxides of Nitrogen (NOx) are measured by DOAS, and the concentrations of Carbon Monoxide (CO) and Carbon Dioxide (CO2) are measured by TDLAS. The measurement precisions for CO and CO2 are ±0.25%, and the detection limits for HC and NO are ±250ppm.

Paper Details

Date Published: 12 May 2005
PDF: 9 pages
Proc. SPIE 5832, Optical Technologies for Atmospheric, Ocean, and Environmental Studies, (12 May 2005); doi: 10.1117/12.619642
Show Author Affiliations
Jianguo Liu, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Wenqing Liu, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Fengzhong Dong, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Pinhua Xie, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Yujun Zhang, Anhui Institute of Optics and Fine Mechanics, CAS (China)
Qingnong Wei, Anhui Institute of Optics and Fine Mechanics, CAS (China)


Published in SPIE Proceedings Vol. 5832:
Optical Technologies for Atmospheric, Ocean, and Environmental Studies
Daren Lu; Gennadii G. Matvienko, Editor(s)

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