Deposition of airborne particulates onto plant leaves

Journal Article · Wed Jan 01 04:00:00 EST 1975 · J. Environ. Qual.; (United States)

DOI:https://doi.org/10.2134/jeq1975.00472425000400040015x· OSTI ID:7195238

Klepper, B; Craig, D K

In order to assess potential environmental hazards from foliar absorption of airborne pollutants released in stack effluents from industrial plants, it is necessary to measure deposition characteristics onto plant foliage. The paper describes an exposure chamber which permits highly toxic materials to be delivered to plant leaves under reproducible conditions of wind speed and aerosol concentration. An aerosol of a gold colloid labelled with /sup 198/Au and having an acitivity median aerodynamic diameter (AMAD) of about 0.8 ..mu..m was used in experiments with bean leaves (Phaseolus vulgaris L. var. ''Tendergreen'') and with inert surfaces. Measurements were made of leaf area, wind speed, and aerosol concentration and particle size distribution. Leaves oriented toward and away from winds of 0.42 cm/second showed similar deposition rates for particles with an AMAD of about 0.8 ..mu..m. Deposition velocities for leaves were similar to deposition velocities measured for upward facing inert surfaces which were an order of magnitude greater than downward facing inert surfaces for the aerosols and wind velocities used in these experiments. (auth)

• Research Organization: Battelle Pacific Northwest Labs., Richland, WA
• OSTI ID: 7195238
• Journal Information: J. Environ. Qual.; (United States), Journal Name: J. Environ. Qual.; (United States) Vol. 4:4; ISSN JEVQA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
AEROSOLS
AIR POLLUTION
BETA DECAY RADIOISOTOPES
BETA-MINUS DECAY RADIOISOTOPES
BIOMASS
COLLOIDS
DAYS LIVING RADIOISOTOPES
DEPOSITION
DISPERSIONS
ENERGY SOURCES
ENVIRONMENTAL EFFECTS
GOLD 198
GOLD ISOTOPES
HEAVY NUCLEI
ISOTOPES
LABORATORY EQUIPMENT
LEAVES
LEGUMINOSAE
MANAGEMENT
NUCLEI
ODD-ODD NUCLEI
PARTICLE SIZE
PARTICLES
PHASEOLUS
PLANTS
POLLUTION
RADIOISOTOPES
RENEWABLE ENERGY SOURCES
SIZE
SOLS
STACK DISPOSAL
VELOCITY
WASTE DISPOSAL
WASTE MANAGEMENT
WIND