Abstract
This paper reports an assessment of the level of the radionuclides 40K, 232Th and238U in environmental soil samples (process waste), and hence their calculated doserates. For this purpose, the radioactivity from three natural radionuclides wasdetermined in tin process-waste samples in Jos, Nigeria. This work is based on theparticle induced x-ray emission (PIXE) approach, devoid of the secular equilibrium,and most of the resolution, interference, self-absorption, geometrical and densitycorrection problems inherent in gamma spectrometry. Many potential environmentalhazards have been observed and the data would be of use to the government in itsremediation plan for the study area. The high hazard indices require taking adequatemeasures to check exposures, and an underground lining in the waste ponds toprevent direct contact with the waste pile is recommended. The use of the wastes asbuilding materials should be stopped and use of soils around this area in anydevelopment projects should be discouraged until detailed studies on indoor radiationdoses and the effects on the inhabitants of prolonged exposures have been carriedout.
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