Damage by air pollution

Journal Article · Thu Jan 12 04:00:00 EST 1961 · Florists' Rev.; (United States)

OSTI ID:6299591

Darley, E F; Middleton, J T

Photochemical air pollution in the Los Angeles and San Francisco bay areas of California causes damage to the foliage of many plants and reduces the growth of a variety of glasshouse-grown crops. Not only is commercial flower production adversely affected, but a wide variety of critically controlled plant experiments conducted by several research institutions also are hampered. Moderate to severe plant damage has been experienced during the past several years for all but a few weeks in the winter months in standard glasshouses at the University of California at Riverside. Plants in glasshouses can be protected from photochemical air pollution by passing all of the air entering the house through activated carbon filters. The phytotoxic products of the photochemical reactions are ozone, the recently described peroxyacetyl nitrite PAN and the oxidants, as yet unidentified, produced by ozone-olefin reactions. Although ethylene occurs in the photochemical air pollution complex and is damaging to a variety of plants, it is not removed by activated carbon. A combination of filter-cooler unit is described which filters phytotoxicants from the air in greenhouses.

• Research Organization: Univ. of California, Riverside
• OSTI ID: 6299591
• Journal Information: Florists' Rev.; (United States), Journal Name: Florists' Rev.; (United States) Vol. 127; ISSN FLREA
• Country of Publication: United States
• Language: English

Related Subjects

500200* -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
560303 -- Chemicals Metabolism & Toxicology-- Plants-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AIR POLLUTION
AIR POLLUTION CONTROL
ALKENES
ATMOSPHERES
BUILDINGS
CALIFORNIA
CONTROL
CONTROLLED ATMOSPHERES
CROPS
DESIGN
ESTERS
ETHYLENE
FEDERAL REGION IX
FILTERS
FILTRATION
GREENHOUSES
GROWTH
HYDROCARBONS
LOS ANGELES
NITRATES
NITRIC ACID ESTERS
NITROGEN COMPOUNDS
NORTH AMERICA
ORGANIC COMPOUNDS
ORNAMENTAL PLANTS
OXYGEN COMPOUNDS
OZONE
PACIFIC OCEAN
PEROXYACETYL NITRATE
PHOTOCHEMICAL OXIDANTS
PLANT GROWTH
PLANTS
POLLUTION
POLLUTION CONTROL
SAN FRANCISCO BAY
SEAS
SEPARATION PROCESSES
SURFACE WATERS
TOXICITY
USA