Lead distribution in tree rings
Journal Article
·
· For. Sci.; (United States)
OSTI ID:6312169
Large amounts of lead are being released into the environment from automobile exhaust. Many studies have dealt with the accumulation of lead in soils, plants, and animals; but few have dealt specifically with the accumulation of lead over time. This study evaluates the potential of tree rings as indicators of environmental lead accumulation. Three sampling locations were selected to provide several tree species, including sugar maple (Acer saccharum Marsh), red oak (Quercus rubra L.) and loblolly pine (Pinus taeda L.), and a range of potential lead inputs based on traffic volume. Increment cores were taken from six trees of each species at locations near and remote to automobile traffic and subsampled for prior and current 10-year growth segments. The segments were analyzed by atomic absorption spectrophotometry to obtain average lead concentrations. In cores taken near roads, significantly higher lead concentrations were found in the last 10 years growth than in the earlier 10-year growth period. Lead concentrations in cores from trees remote to roads showed no significant increase over time.
- Research Organization:
- Univ. of Illinois, Urbana
- OSTI ID:
- 6312169
- Journal Information:
- For. Sci.; (United States), Journal Name: For. Sci.; (United States) Vol. 20:3; ISSN FOSCA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
510200* -- Environment
Terrestrial-- 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
AUTOMOBILES
BIOLOGICAL INDICATORS
BUILDUP
COMPARATIVE EVALUATIONS
CONIFERS
ECOLOGICAL CONCENTRATION
ELEMENTS
ENVIRONMENTAL TRANSPORT
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
LEAD
MAPLES
MASS TRANSFER
METALS
OAKS
PINES
PLANTS
POLLUTION
TREES
UPTAKE
VEHICLES
WASTES
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
510200* -- Environment
Terrestrial-- 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
AUTOMOBILES
BIOLOGICAL INDICATORS
BUILDUP
COMPARATIVE EVALUATIONS
CONIFERS
ECOLOGICAL CONCENTRATION
ELEMENTS
ENVIRONMENTAL TRANSPORT
EXHAUST GASES
FLUIDS
GASEOUS WASTES
GASES
LEAD
MAPLES
MASS TRANSFER
METALS
OAKS
PINES
PLANTS
POLLUTION
TREES
UPTAKE
VEHICLES
WASTES