A study was carried out with a group of pre-school children staying at the central nursery of the University of Sao Paulo and with a group of elderly living in private institutions in Sao Paulo, Brazil, with the aim of evaluating the contents of toxic elements present in the diets of these groups.
For sampling, the duplicate portion technique was used, which consisted of collecting all the foods and beverages consumed during three consecutive days.
A radiochemical separation procedure was developed and applied to the determination of As, Cd, Sb, W, Th and U, by means of retention of these elements in the resin Chelex 100 and inorganic exchanger tin dioxide in an appropriate medium.
The elements analysed presented levels of ingestion below the maximum levels recommended by the World Health Organization (WHO), and thus can be considered as not presenting any health hazard to the individuals studied in the present work.
Mots-clés Pascal : Elément minéral, Métal lourd, Dose journalière, Aliment, Boisson, Brésil, Amérique du Sud, Amérique, Enfant, Homme, Age préscolaire, Vieillard, Analyse quantitative
Mots-clés Pascal anglais : Inorganic element, Heavy metal, Daily dose, Food, Beverage, Brazil, South America, America, Child, Human, Preschool age, Elderly, Quantitative analysis
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 98-0443103
Code Inist : 002B03H. Création : 25/01/1999.