The trace elemental contents in normal male (20-40 years old) scalp hair collected in 1994 and 1996

respectively

at the Shijing Shan district of Beijing have been determined with the instrumental neutron activation analysis. The comparison of the elemental contents between these two batchs of samples has been made by means of statistical t-test in order to evaluate the alteration trend of the environment situation in this area and the changes of nutrition state of the studied group. It has also been compared with the published data in literature of the elemental contents of scalp hair to indicate its functions on the study of environmental bioindicating.