Investigation of SO/sub 2/ effects on rubber trees as a means of forestalling injury to Malayan plantations from refinery emissions

Journal Article · Mon Jun 01 04:00:00 EDT 1964 · J. Air Pollut. Control Assoc.; (United States)

DOI:https://doi.org/10.1080/00022470.1964.10468275· OSTI ID:6410547

Brennan, E; Leone, I A; Daines, R H

In order to study the effects of SO/sub 2/ concentrations on rubber trees in Malaya, rubber trees were subjected to short- and long-term fumigations at increasing SO/sub 2/ concentrations in a test fumigation chamber. Results indicate that four-hour fumigations of dry trees under conditions simulating the climate of Malaya did not produce injury until the concentration of 0.78 SO/sub 2/ ppm was reached. Fifteen-minute exposures of the trees failed to cause injury until the concentration of 75 to 100 ppm SO/sub 2/ was reached. A slight injury was produced at 0.40 ppm SO/sub 2/ when wet leaves were fumigated for 4 hours. Trees which were fumigated wet showed a significant increase in total sulfur content over dry check trees. Old leaves consistently had a higher total S content than did younger leaves. In young leaves much of the absorbed S could be washed off the surface, as opposed to older leaves. A three week fumigation at 0.30 ppm SO/sub 2/ failed to produce any injury symptoms. A total S content of the foliage sufficient to cause injury when accumulated at a rapid rate failed to injure when accumulated over a three week period. Respiration studies failed to indicate the possibility of hidden injury occurring during this prolonged fumigation.

• Research Organization: Rutgers, The State Univ., New Brunswick, NJ
• OSTI ID: 6410547
• Journal Information: J. Air Pollut. Control Assoc.; (United States), Journal Name: J. Air Pollut. Control Assoc.; (United States) Vol. 14:6; ISSN JPCAA
• 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
ASIA
ATMOSPHERES
BIOLOGICAL ACCUMULATION
BIOLOGICAL EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISORPTION
CLIMATES
CONTROLLED ATMOSPHERES
DIFFUSION
DISTRIBUTION
ECOLOGICAL CONCENTRATION
EXPOSURE CHAMBERS
GASEOUS WASTES
INDUSTRIAL PLANTS
INJURIES
MALAYSIA
OXIDES
OXYGEN COMPOUNDS
PETROLEUM REFINERIES
PLANTS
POLLUTION
RESPIRATION
RUBBER TREES
SEPARATION PROCESSES
SIMULATION
SORPTION
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
TISSUE DISTRIBUTION
TREES
WASTES