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L. Husain, et al., “Application of the /Se Tracer Technique to Study SO2 Oxidation in Cloud and Fog on a Time Scale of Minutes,” Chemosphere, Vol. 54, No. 2, 2004, pp. 177-183. doi:10.1016/S0045-6535(03)00531-9

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• TITLE: Status and Spatial Visualization of Toxic Pollutants (BTEX) in Urban Atmosphere

  AUTHORS: Muhannad Mansha, Anwar Rashid Saleemi, Javed Hassan Naqvi

  KEYWORDS: Spatial Distribution, Hazardous Air Pollutants, Contour Plot, Data Acquisition, Emission Sources

  JOURNAL NAME: Advances in Chemical Engineering and Science, Vol.1 No.4, October 26, 2011

  ABSTRACT: This is a study of visualization of positive data of by Positive Modified Quadratic Shepard (PMQS) method. This data visualization tool was implemented successfully in MATLAB using both recorded pollutants levels and geological coordinates of data acquisition points located in different localities of the metropolitan. These points were located in/around the potential air emissions sources like vehicular transport, industrial sector and residential sector dispersed all around the city Field measurements were carried for 12 hour (day time) at eight points each. An online VOC analyzer was used during field campaign to collect data of hazardous organic pollutants like benzene, toluene, ethyl benzene, xylene (BTEX). Constant concentration curves were generated in form of contour plots showing latitude, longitude and spatial distribution of recorded atmospheric pollutants.