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Yusuf Umar

Publications (2)

Lead, Cadmium and Zinc in Agricultural Soils and Irish Potatoes around an Abandoned Tin-Mining Area of Jos-South, Nigeria

Sanda Yusuf Sadau, Ishaya Iliyasu, Adelowo A. A., Sunday Sarki Habila, Yusuf Umar, Gada Sunday Samson, Atipo Kolawole M. & Ojo Emmanuel O. · Physical Science International Journal · 2026

Decades of tin extraction on the Jos Plateau have left behind heavily reworked ground, including open pits, spoil heaps and slurry deposits, much of which has gradually been absorbed back into local farming. This paper re-examines a field investigation of that reclamation process...

Open access Research Article 10.9734/psij/2026/v30i5973

Geochemical Fractionation, Stability and Potential Mobility of Heavy Metals in Soils from Oil-field Communities of Delta State, Nigeria

Sanda Yusuf Sadau, Ishaya Iliyasu, Sunday Sarki Habila, A. A. Adelowo, Yusuf Umar, Gada Sunday Samson & A. Tina Abimbola · Asian Journal of Applied Chemistry Research · 2026

The total concentration of a heavy metal in soil provides limited information about its environmental behaviour, since mobility and potential bioavailability depend strongly on the geochemical phase with which the metal is associated. This study investigated the fractionation, st...

Open access Research Article 10.9734/ajacr/2026/v17i3419