Journal of Environmental Analytical Chemistry

Verla Evelyn Ngozi

Publications

• Research Article
  Speciation of Metals and Risk Assessment in Selected Food Crop Samples Grown in Ohaji/Egbema LGA, Imo State, Nigeria
  Author(s): Verla Andrew Wirnkor, Verla Evelyn Ngozi, Njoku Victor Obinna and Njoku Carmelita ChinonsoVerla Andrew Wirnkor, Verla Evelyn Ngozi, Njoku Victor Obinna and Njoku Carmelita Chinonso
  
  Ohaji Egbema is known for its oil production and exploration activities and so crops grown in this area could be contaminated. Chemical speciation was carried out on four commonly grown food crops in the area so as to determine the level of metal contamination. The samples were analyzed sequentially and the metal species in the extract determined by ASS. Results revealed that mean concentrations of all studied metals to fall within the WHO/FAO permissible limits. Significant bioavailability was observed for Pb in Okoro (0.67) and Orange (0.7). Zn showed the highest concentration and its bioavailability was highest for Okoro (12.6)>Pawpaw (7.9)>Orange (5.5)>Cassava (0.28). The sum of EDI for both adult and children exhibited similar trend with Cassava having the least value in both adult and children. Though metals showed low values of EDI, excessive consumption can have adver.. Read More»
  DOI: 10.4172/2380-2391.1000216

  Abstract PDF