Development and application of methods for estimating inhalable and fine particle concentrations from routine Hi-Vol data

An Overview of the Rio de Janeiro Aerosol Characterization Study

“…8 ' 10 -15 - 20 Concentrations of extractable particulate organic matter measured in Rio were only slightly higher than levels recently measured in several cities in New Jersey, 10 -19 while levels of PAH were comparable to those measured during winter in the U.S. The overall composition of the wintertime Rio aerosol differed significantly from that observed for eastern U.S. cities in several respects.…”

Estimation of particulate matter from visibility in Bangkok, Thailand

“…To overcome these problems airport visibility data have been used in several epidemiologic studies (Schwartz, 1991;Abbey et al, 1995b ). These studies evaluated the association between mortality and PM2.5 and TSP, which were estimated from airport visibility, a technique suggested by Ozkaynak et al ( 1985 ) ; Abbey et al (1995a ) ;and Trijonis (1983 ). Fine aerosols, with a diameter less than 2.5 m, can be effective light scatterers because the wavelength of visible light falls in this range ( Sisler and Malm, 1994 ), and fine particles with smaller diameters ( 0.1± 1 m range ) are the most efficient scatterers of visible light ( Pitchford, 1991 ).…”

Relationships between Aerosol Extinction Coefficients Derived from Airport Visual Range Observations and Alternative Measures of Airborne Particle Mass

“…Finally, since a previous analysis by Trijonis 14 examined the partial IP Network data from related perspectives, we tried to construct our predictive models similar to his. However, our investigations were based on a more extensive data base for each of the cities considered, plus our analysis included Bext as an additional independent variable.…”