Maigari A. U.

Department of Chemistry, FCE(T), Gombe, Nigeria

Ekanem E. O.

Chemistry programme, Abubakar Tafawa Balewa University, Bauchi, Nigeria

Garba I. H.

Chemistry programme, Abubakar Tafawa Balewa University, Bauchi, Nigeria

Maigari F.U.

Biochemistry Department, Gombe State University, Gombe, Nigeria