ZINC, COPPER AND IRON CONTENTS OF HAIR IN DIFFERENT AGES AND SEXES OF CHILDREN AND ADOLESCENT / 营养学报

Zinc, copper and iron contents of pooled hair samples of primary and secondary school pupils in Beijing City were determined and their relations with the age and sex of the pupils were discussed. The zinc content of the hair varied with the age of the pupils more significantly than the copper and iron content, and therefore, it might be taken as an indicator of the physical development of the pupils.