THE ELEMENT PORTRAIT OF 7-14-YEAR-OLD CHILDREN OF MAGADAN TOWN

To study the element profi le of the population in Asian north, we examined 118 children at the age of 7–14 being residents of Magadan town. The content of 25 chemical elements obtained from the children’s hair samples was determined using the method of atom-emission and mass spectrometry with the inductively bonded argon plasma. From the results obtained we can suggest the reliable sex-related difference observed in some elements. The boys’ Al, B, Cd, K, Na, and Pb concentrations exceeded those of the girls while the values of Be, Ca, Hg, Mg, Mn, Si, and Zn proved to be higher in the girls. The frequency analysis of deviation revealed defi cit through the following elements: Mg in 74 % of the children, Co – in 63 %, Ca – in 54 %, K and Se – in 41 %, Mn – in 34 %, I – in 30 %, Cr, Cu and Zn – in 29 %. Signifi cant excess was found in Si (36 % of the examinees), Fe and Na (24 %). Toxic elements were found to be within the physiological norm; however Al and Ni excess occurred in rare occasions of the girls, Pb excess in some boys, and Cd, Li and Sn excess was found in both of the girls and boys. Having compared our fi ndings with those of the referent data obtained in the Central Russia, we concluded that almost all the interval parameters and the average values of the elements proved to be lower in Magadan subjects except the boys’ Na and Ni, the girls’ Mn, and Cr, and Si in both sex groups of Magadan children. Correlation analysis revealed signifi cant sex-related difference concerning the presence, strength and quantity of the interrelations and enabled to calculate the adaptation potential of the children’s element systems. The girls demonstrated their levels of adaptability equal to 95,38 conventional units, the boys – 79,13. The girls’ higher values are apparently caused by their earlier pubescence in comparison with the boys.