Mr. Koech Nehemiah Kipkirui, an MSc student at the Institute of Nuclear Science and Technology successfully defended his Master Thesis, “Analysis Of Heavy Metals, Minerals And Radionuclides In Heavy Sands From Tiva And Mwita Syano Rivers, Kitui County”, on 23rd June 23, 2017. His work focused on characterizing sands from Tiva and Mwita Syano Rivers in Kitui County. He carried out analysis of heavy sands for the presence of mineral sands, radionuclides and heavy metals. Samples were analyzed for:
- Mineralogical content using the X-Ray Diffraction (XRD) technique;
- Presence of heavy metals using Energy Dispersive X-Ray Diffraction (EDXRF) technique, and
- The presence of radionuclides by high-resolution gamma radiation spectrometry using HP Ge detector.