[Determination of tissue chlorine, bromine and iodine concentrations in normal persons with neutron activation method].

Concentrations of chlorine (Cl), bromine (Br) and iodine (I) in heart, liver, spleen, lungs, muscle and hair of normal and healthy persons living in Beijing area were determined with neutron activation method. Results showed that Cl concentrations in variety of tissues, except for hair, were no significant difference. Cl concentration in muscle was slightly less than that in other tissues. Bromine concentrations in lungs and iodine in liver were the highest. Bromine concentration in human tissues was significantly lower in Beijing area than abroad, and iodine was only slightly less and without statistical significance. Furthermore, Cl, Br and I in four kinds of biological standard reference materials were determined, and their results conformed with the recommendation values.