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Presence and concentrations of radionuclides could be as a result of natural and human activities. This  study examined the associations and differences  among soil, sediment and water specific activities of long-lived radioactive element (LLRE). Gamma spectroscopy was used to measure the concentration of  the LLRE along the Mini Okoro/Oginigba Creek, Port Harcourt. Specific activities of three selected LLRE were derived. Correlation analysis was carried out to  examine associations among the specific activities across different substrates. A strong and a significant negative correlation exists between the specific  activities of Water 40K and Soil 232Th (r =-0.721, p 0.05) for 40K, 232Th and 238U respectively. The concentration of solid samples (soil and sediment) is different from the liquid (water) samples. These associations can be attributed to some specific underlying factors. And in other to understand them there is need for more studies. © JASEM Keywords : Radionuclide; environmental monitoring; Niger Delta; Gamma spectroscopy; Environmental management

Monitoring of specific activities of long-lived radioactive elements along the Mini- Okoro/Oginigba Creek, Port Harcourt