The trace element composition of whole blood has been investigated in adult population in Bangladesh. The population was formed
of one hundred individuals randomly selected from a working community of five hundred adults. The blood samples were freeze
dried and analyzed using the external beam PIXE method. In this analysis, proton beams of 2 MeV energy and about 30 nA current
were used for characteristic X-ray excitation. The concentration of eight elements, K, Ca, Fe, Cu, Zn, Br, Rb and Pb were
determined by comparison with a calibration obtained from NBS orchard leaves. The frequency distributions of all the elements
measured are presented and the results are compared with available data.