Elemental analysis of hair among children living in Bangkok, Negros Island and Takarazuka. A comparative study in three countries.

: Twelve elements in the hair of children living in Bangkok (Thailand) were compared with those of children living in Negros Island (Philippines) and Takarazuka (Japan). With the exception of lower Se and F values, the contents of Ca, Mg, Na, K, Fe and Al in the hair of children in Bangkok were higher than those in Japanese children. A high coefficient of correlation was obtained between Cu and Fe, Cu and Mn, Se and Fe, Se and Cu, Se and Mn in the children of Bangkok. These findings were not found in other groups.