Comparability between PM2.5 and particle light scattering measurements.
Particle light scattering and PM2.5 (particles with aerodynamic diameters less than 2.5 microm) concentration data from air quality studies conducted over the past ten years were examined. Fine particle scattering efficiencies were determined from statistical relationships among measured light scattering and fine and coarse mass concentrations. The resulting fine particle scattering efficiencies ranged from 1.7 m2 g(-1) at Meadview in the Grand Canyon to over 5 m2 g(-1) in Mexico City. Most of the derived line scattering efficiencies were centered around 2 m2 g(-1), which is considerably lower than most values reported from previous studies.
Chow
Judith C
JC
Desert Research Institute, Reno, Nevada, USA. judyc@dri.edu
Watson
John G
JG
Lowenthal
Douglas H
DH
Richards
L Willard
LW
D000392:Air Movements; D000393:Air Pollutants / Q000032:analysis*; D004784:Environmental Monitoring / Q000706:statistics & numerical data*; D055095:Optics and Photonics; D010316:Particle Size
D000393:Air Pollutants