Comparison of fluorine levels in crops before and after aluminum factory operations in the Dalles area. [Alfalfa, Apricot, Cherry, Sour Cherry, Grape, Peach, Prune]
The fluorine content of seven crops grown in The Dalles fruit area have been studied beginning in August, 1953. Determinations of leaf fluorine have been made four times previous to and three times since July 26, 1958, the date when a local aluminum reduction factory started operations. Crops sampled were in Oregon, within 6 miles of the factory. A summary of these data are presented. Leaf samples taken before July 26, 1958 averaged less than 12 parts per million (ppm) fluorine at each collection. Similar samples collected October 7, 1958, 73 days after start of operation of the factory, ranged from 16 to 197 ppm, averaging 68 ppm fluorine. In 1959 the June 17 samples ranged from 6 to 106 ppm, averging 26 ppm fluorine while those collected August 27-28 ranged from 18 to 207 ppm, averaging 73 ppm fluorine. The fluorine content of samples taken October 7, 1958 decreased from an average of 140 ppm at 1 mile from the factory to an average of 54 ppm, 4-5 miles away. Results obtained in 1959 were somewhat similar. Fluorine burn on leaves was not found in 1953, 1957, and 1958 but was severe in 1959 on certain apricot and prune trees growing within 2 miles from the factory. There was a wide variation in the degree of burn from tree to tree within an orchard. Premature ripening and softening at the suture of Red Haven, J.H. Hale and Elberta peach fruits occurred in certain orchards in 1959. This condition had not been observed previously in this area.
- OSTI ID:
- 6498384
- Country of Publication:
- United States
- Language:
- English
Similar Records
Fluorine levels in crops of The Dalles area in 1962 and 1963
Fluorine levels in 1960 crops of The Dalles area
Related Subjects
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
ALUMINIUM
BIOLOGICAL ACCUMULATION
BIOLOGICAL EFFECTS
BIOLOGICAL INDICATORS
BIOLOGICAL VARIABILITY
COMPARATIVE EVALUATIONS
CROPS
DATA
ECOLOGICAL CONCENTRATION
ELEMENTS
ENVIRONMENTAL EFFECTS
EXPERIMENTAL DATA
FEDERAL REGION X
FLUORINE
HALOGENS
INDUSTRIAL PLANTS
INFORMATION
METALS
NONMETALS
NORTH AMERICA
NUMERICAL DATA
OREGON
POLLUTION
SENSITIVITY
USA