Development of an improved image processing based visibility model
Article Abstract:
The development of an improved image processing based visibility model and its application to regional haze conditions are discussed. Sky color and its intensity were theoretically calculated and related by photographic data. Comparison against radiometer measurements and point by point comparison of actual photographs and synthetic images were used to validate the model. The utility of the model for providing visibiity to pollutant loadings was demonstrated.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1993
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Effect of surfactant layers on the size changes of aerosol particles as a function of relative humidity
Article Abstract:
The influence of the surfactant layers Tween 80, dodecyl sulfate, sorbitan ester and azelaic acid on the change in mass of coated aerosol particles as a function of realtive humidity was investigated. The results showed that Tween 80 lowered the relative humidity by as much as 75%, depending on layer thickness. A surfactant coating on carbon black particles increased the hygroscopicity of the particles.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1993
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Evaluation of elemental cadmium as a marker for environmental tobacco smoke
Article Abstract:
Elemental cadmium (Cd) exhibits several outstanding properties that makes it an ideal marker for environmental tobacco smoke (ETS). Elevated Cd concentrations were observed in smoking areas compared with less than 2 ng/m3 in ETS-free indoor air. Cadmium concentrations also exhibited minimal variation across different unburnt tobacco products. Cd is also a significant marker for respiratory ETS.
Publication Name: Environmental Science & Technology
Subject: Science and technology
ISSN: 0013-936X
Year: 1995
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