Substantial decrease of blood lead in Swedish children, 1978-94, associated with petrol lead.
Objectives-To study the potential impact of environmental exposure to petrol lead, residential area, age, sex, and lead exposing hobby, on blood lead concentrations (BPb) in children.
Methods-In the south of Sweden, yearly from 1978-94, BPb was measured in 1230 boys and 1211 girls, aged between 3 and 19 (median 10 ; quartiles 9 and 12) years.
For the samples of 1978, the geometric mean (GM) was 67 (range 30-250) mug/l in boys and 53 (18-161) mug/l in girls, whereas the corresponding GMs for 1994 were 27 (12-122) and 23 (12-97) mug/l. The sex difference was present only in children over eight.
Moreover, residential area affected BPb ; in particular, children living near a smelter area had raised BPbs.
In the 171 boys and 165 girls who were sampled twice with an interval of one to four years, the decreases in BPb were estimated to be 6% (95% confidence interval 4% - 8%) and 10% (8% - 13%) lyear, respectively.
Conclusions-The present report points out the considerable beneficial effect of the gradual banning of petrol lead on the lead exposure affecting the population and differential sex specific BPb patterns due to a pronounced age effect in girls, which may be caused by older girls'lower food intake per kg of body weight, lower lung ventilation, cleaner life style, and loss of blood lead through menstrual bleedings.
Mots-clés Pascal : Plomb, Taux, Sang, Enfant, Homme, Epidémiologie, Essence au plomb, Politique sanitaire, Santé et environnement, Suède, Europe, Métal lourd
Mots-clés Pascal anglais : Lead, Rate, Blood, Child, Human, Epidemiology, Leaded gasoline, Health policy, Health and environment, Sweden, Europe, Heavy metal
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 95-0579533
Code Inist : 002B03L05. Création : 01/03/1996.