Sensors & Transducers Journal

    (ISSN 1726- 5479)

Vol. 77, Issue 3, March 2007, pp. 1065-1072

Real-Time Air Pollution Monitoring in Urban Environment Using In-Situ Measurements Using WO₃ Gas Sensors and Satellite Imagery Through Internet GIS

O. Pummakarnchana¹, V. Phonekeo², A. Vaseashta³

¹Department of Environmental Science, School of Science,

Silpakorn University, Nakornpathom, 70000, Thailand

²Geoinformatics Center, Asian Institute of Technology

Klongluang, Pathumthani, 12120, Thailand

³Nanomaterials Processing and Characterization Laboratories

Graduate Program in Physical Sciences, Marshall University, Huntington, WV 25755, USA

Tel.: +1 (304) 696 2755, E-mail: prof.vaseashta@marshall.edu

Received: 25 December 2006 /   Accepted: 15 March 2007 /   Published: 26 March 2007

Abstract: Air pollution is a serious problem in densely populated and industrialized areas in some Asian countries. The area investigated for this study is Bangkok, Thailand. The air pollution in central Bangkok is significant in areas with high population density. To monitor air pollution over a large area, this research aims at developing a cost-effective and real-time air pollution monitoring system that utilizes numerical modeling in conjunction with inexpensive, state-of-the-art gas sensors, remote sensing methodologies, and Internet GIS. Conventional pollution detectors, installed by the Bangkok Pollution Control Department, as well as WO₃ sensors are employed for in-situ pollution measurements. The data obtained from the satellites sensors and measurements conducted on ground are used for numerical modeling by “Multiple Regressions” to investigate air pollutants distribution. The analysis and correlation of the air pollutants data are transferred to a Personal Digital Assistant linked via Bluetooth communication tools and Global Positioning System for rapid and simultaneous dissemination of information on pollution levels at multiple sites.

Keywords: Internet GIS, Real time air pollution monitoring system, Remote sensing, Tungsten oxide semiconductor sensor

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