The phytoremediating capacities of Telfaira occidentalis, Bryophyllum pinnatum, Talinum triiangulare, Vigna unguiculata, for metal ions, were studied. Soil samples, tested for Cobalt, lead and Zinc ions concentration levels were inoculatedwith 0.1M solution of Co(NO3)2, Pb(NO3)2 and Zn(NO3)2 before planting the above species. The roots, stems and leaves of the plants were harvested at two weeks interval, dried, ashed and digested with concentrated HNO3. The metal ions absorbed by the various plant parts were analysed using Atomic Absorption Spectrophotometer Buck 200A. The results indicated that Vigna unguiculataabsorbed Pb2+ and Zn2+ most. Talinum triangulareshowed greater absorbance for Co2+, Bryophyllum pinnatumabsorbed Pb2+ better than others except vignaunguiculata. Further, Telfairia occidentalisabsorbed Zn2+ and Co2+ better than Bryophyllum pinnatum and Albelmoschus esculentus. Co2+ was toxic to Vigna unguiculata and Albelmoschus esculentus. In general, the African plants could be used to sequestrate metals from polluted soils.
[1]
Anarado C. Ebere, Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka., Nigeria.
[2]
Anarado C. John, Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka., Nigeria.
[3]
Egwuatu C. Ijeamaka, Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka., Nigeria.
[4]
Umedum N. Lilian, Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka., Nigeria.
[5]
Okoye P. A. Chuma, Department of Pure and Industrial Chemistry, Nnamdi Azikiwe University, Awka., Nigeria.
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