TY - JOUR
T1 - The deposition of trace metal-containing particles in the Los Angeles Area
AU - Davidson, Cliff I.
N1 - Funding Information:
The technical assistance of Sheldon Friedlander and Susanne Hering is gratefully acknowledged_ Sylvia Garcia and Helen Fabel are also thanked for their kind assistance_ This research is sponsored by the National Institutes of Health and the U.S. Environmental Protection Agency. whose support Is greatIy appreciated_
PY - 1977
Y1 - 1977
N2 - Measurements were made of deposition from the free atmosphere of lead, zinc and cadmium on flat teflon plates. To determine the mechanisms of deposition, simultaneous measurements were made of the airborne size distributions of these metals by isokinetic sampling with a cascade impactor. Measurements of the airborne mass of lead, zinc and cadmium indicated 17%, 32% and 37% in the size range greater than 10 μm (aerodynamic diameter) respectively. Calculations based on these data showed about 70% of the total mass deposition for each metal was due to sedimentation of these large particles. The bulk of the airborne mass of these metals, in particles much smaller than 10 μm, played only a minor role in the deposition process.
AB - Measurements were made of deposition from the free atmosphere of lead, zinc and cadmium on flat teflon plates. To determine the mechanisms of deposition, simultaneous measurements were made of the airborne size distributions of these metals by isokinetic sampling with a cascade impactor. Measurements of the airborne mass of lead, zinc and cadmium indicated 17%, 32% and 37% in the size range greater than 10 μm (aerodynamic diameter) respectively. Calculations based on these data showed about 70% of the total mass deposition for each metal was due to sedimentation of these large particles. The bulk of the airborne mass of these metals, in particles much smaller than 10 μm, played only a minor role in the deposition process.
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U2 - 10.1016/0032-5910(77)85013-4
DO - 10.1016/0032-5910(77)85013-4
M3 - Article
AN - SCOPUS:0017539475
VL - 18
SP - 117
EP - 126
JO - Powder Technology
JF - Powder Technology
SN - 0032-5910
IS - 1
ER -