The deposition of trace metal-containing particles in the Los Angeles Area

Cliff I. Davidson

doi:10.1016/0032-5910(77)85013-4

The deposition of trace metal-containing particles in the Los Angeles Area

Cliff I. Davidson

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

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.

Original language	English (US)
Pages (from-to)	117-126
Number of pages	10
Journal	Powder Technology
Volume	18
Issue number	1
DOIs	https://doi.org/10.1016/0032-5910(77)85013-4
State	Published - 1977
Externally published	Yes

ASJC Scopus subject areas

Chemical Engineering(all)

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title = "The deposition of trace metal-containing particles in the Los Angeles Area",

abstract = "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.",

author = "Davidson, {Cliff I.}",

note = "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_",

year = "1977",

doi = "10.1016/0032-5910(77)85013-4",

language = "English (US)",

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pages = "117--126",

journal = "Powder Technology",

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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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The deposition of trace metal-containing particles in the Los Angeles Area

Abstract

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