Background exposure of urban populations to lead and cadmium : comparison between China and Japan.
To assess and compare the background exposure of the general population to lead (Pb) and cadmium (Cd) in China and in Japan.
Food duplicates and peripheral blood samples were collected from nonoccupationally exposed subjects, viz 202 Chinese women in four Chinese cities (Beijing, Shanghai, Nanning, and Tainan) and 72 Japanese women in three Japanese cities (Tokyo, Kyoto, and Sendai) in the years 1993-1995.
Wet-ashing and graphite furnace atomic absorption spectrometric methods were used for the determination of Pb and Cd levels in food and blood samples.
Geometric mean (GM) dietary Pb intake (25.8 mmu/day) and the GM Pb concentration in blood (56.7 mug/l) in Chinese were significantly higher than in Japancse women (11.6 mug/day in food and 32.1 mug/l in blood), whereas Cd in food (32.1 mug/day) and Cd in blood (1.92 mug/l) in Japanese were significantly higher than in Chinese women (9.9 mug/day in food and 1.07 mug/l in blood).
The intake of Pb and Cd via boiled rice accounted for 3.6% and 31.1% of the total dietary burden in Chinese, and 12.10% and 32.7% in Japanese, respectively.
The Cd burden was acquired almost exclusively through the dietary route, whereas the Pb burden came from both air and food, especially in the case of the Chinese population. (...)
Mots-clés Pascal : Plomb, Cadmium, Métal lourd, Polluant, Environnement, Epidémiologie, Femme, Homme, Chine, Asie, Japon, Variation géographique, Exposition, Santé et environnement, Milieu urbain, Taux, Sang
Mots-clés Pascal anglais : Lead, Cadmium, Heavy metal, Pollutant, Environment, Epidemiology, Woman, Human, China, Asia, Japan, Geographical variation, Exposure, Health and environment, Urban environment, Rate, Blood
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 97-0251935
Code Inist : 002B03M02. Création : 11/06/1997.