Lead concentrations of enamel and dentine of deciduous teeth of children from two Finnish towns
Journal Article
·
· Arch. Environ. Health; (United States)
The proton-induced x-ray emission method was used to analyze lead concentrations in enamel and dentine of deciduous teeth of 105 6- and 9-year-old children living in two Finnish towns. Helsinki, the capital city, was assumed to represent high lead exposure and Kuopio, a country town in the middle of Finland, low or moderate lead exposure. In all but two teeth the enamel contained higher lead concentrations than dentine. The individual enamel-dentine lead concentration ratio was not stable but varied greatly. The median dentine lead concentration for 9-year-old children in Helsinki and Kuopio was 2.0 ppm and 2.9 ppm, repsectively, and for 6-year-old children was 2.5 ppm and 2.7 ppm, respectively. The enamel lead concentrations found in 9-year-olds in Helsinki and Kuopio were 4.2 and 4.5 ppm, and in 6-year-old were 9.1 and 4.4 ppm, respectively. The results reveal low or moderate lead concentrations. Nevertheless, a twofold and statistically significant increase was found in the enamel of Helsinki children born in 1974 compared with those born in 1971.
- Research Organization:
- Univ. of Helsinki, Finland
- OSTI ID:
- 6198425
- Journal Information:
- Arch. Environ. Health; (United States), Journal Name: Arch. Environ. Health; (United States) Vol. 39:2; ISSN AEHLA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
560306* -- Chemicals Metabolism & Toxicology-- Man-- (-1987)
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AGE GROUPS
BIOLOGICAL ACCUMULATION
CHEMICAL ANALYSIS
CHILDREN
CONCENTRATION RATIO
DATA
DENTIN
DIGESTIVE SYSTEM
ELEMENTS
EUROPE
FINLAND
INFORMATION
LEAD
METALS
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
ORAL CAVITY
PIXE ANALYSIS
SCANDINAVIA
STATISTICAL DATA
TEETH
WESTERN EUROPE
X-RAY EMISSION ANALYSIS
63 RADIATION, THERMAL, AND OTHER ENVIRON. POLLUTANT EFFECTS ON LIVING ORGS. AND BIOL. MAT.
AGE GROUPS
BIOLOGICAL ACCUMULATION
CHEMICAL ANALYSIS
CHILDREN
CONCENTRATION RATIO
DATA
DENTIN
DIGESTIVE SYSTEM
ELEMENTS
EUROPE
FINLAND
INFORMATION
LEAD
METALS
NONDESTRUCTIVE ANALYSIS
NUMERICAL DATA
ORAL CAVITY
PIXE ANALYSIS
SCANDINAVIA
STATISTICAL DATA
TEETH
WESTERN EUROPE
X-RAY EMISSION ANALYSIS