Oyadiran Wuyi Jonathan

Natural Radioactivity and Radiological Hazard Assessment of Oil-Field Soils in Apkai and Umusedege Communities, Delta State, Nigeria

Yusuf Sadau Sanda, Ishaya Iliyasu, Obonyilo Edache Gabriel, Tine Abimbola Adeniji, Oyadiran Wuyi Jonathan, M. Alpha & Gada Sunday Samson · Physical Science International Journal · 2026

Naturally occurring radioactive materials (NORM) in soil constitute an important pathway for human exposure to ionising radiation, particularly in areas affected by petroleum exploration and related environmental disturbance. This study evaluated the activity concentrations of ²²...

Open access Research Article 10.9734/psij/2026/v30i5983

Heavy-metal Contamination of Soils and Water in the Apkai and Umusedege Oil-field Communities, Ndokwa East and Ndokwa West, Delta State, Nigeria

Sanda Yusuf Sadau, Ishaya Iliyasu, M. Alpha, Muhammad Lawal, Mubarak Mu’azu Gambo, Gada Sunday Samson & Oyadiran Wuyi Jonathan · Physical Science International Journal · 2026

Petroleum exploration and production can introduce potentially toxic metals into the soils and water bodies of host communities, with consequences for both ecosystem integrity and human exposure. This study assessed the concentrations and distribution of ten heavy metals: Ni, Cr,...

Open access Research Article 10.9734/psij/2026/v30i5975

Geochemical Fractionation, Mobility and Environmental Risk of Lead, Cadmium and Zinc in Agricultural Soils from an Abandoned Mining Area in Jos-South, Nigeria

Sanda Yusuf Sadau, Ishaya Iliyasu, M. Ndawashi, M. Alpha, Sunday H. Sarki, Tina Abimbola A. & Oyadiran Wuyi Jonathan · Physical Science International Journal · 2026

The total amount of a potentially toxic element in soil, on its own, provides limited information about its mobility or bioavailability. This paper re-examines the geochemical partitioning, extractability and environmental status of lead (Pb), cadmium (Cd) and zinc (Zn) in agricu...

Open access Research Article 10.9734/psij/2026/v30i5971