FEATURES ENDOECOLOGICAL STATUS OF CHILDREN AND TEENAGERS
Essential (Ca, K, Zn, Fe, Cu, Se, Cr) and toxic (Pb, Cd, Hg, Вi) elements were determined by roentgen-fluorescentic spectrometry in hair of 112 children 12-18 years old with reflux-esophagitis. Following evaluation of the association of their composition with disease duration, educational level of parents and smoking was conducted. High frequency of all essential elements disbalance was shown. Tendency to increased frequency of high level of potassium and decreased frequency of high level of chromium, lead and cadmium was registered with the increase of disease duration. High educational level of parents was accompanied by tendency to decrease of lead and cadmium concentration in examined patients. Smoking was not connected with the changes in elemental hair composition. Key words: elemental composition, hair, children, reflux-esophagitis.