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Articles by P.A.C. Okoye
Total Records ( 3 ) for P.A.C. Okoye
  D.O. Nwude , P.A.C. Okoye and J.O. Babayemi
  Pollution has become a global problem and the results are implied in high levels of contanminants reported for soil, water, air, plants and animals. Blood being a major medium of transfer of heavy metals into milk as indicated in several literatures, it is necessary to constantly assess the levels of these metals in cow tissues, cow being a major source of milk in several countries. Hence, blood levels of Pb, Cd, Co, Zn, Cu and Fe in cows at slaughter at Awka abattoir, Nigeria, at three different seasons, are assessed in this investigation. The blood samples were digested and analyzed with atomic absorption spectrophotometer. The blood levels of Pb range from 0.21-10.6 mg kg-1, Cd, 0.004-0.02 mg kg-1, Co, 0.10-0.97 mg kg-1, Zn, 2.32-12.4 mg kg-1, Cu, 0.04-2.00 mg kg-1 and Fe, 0.73-2.14 mg kg-1. There were significant correlations between the levels of Cd and Cu, Cd and Zn and Co and Zn.
  D.O. Nwude , P.A.C. Okoye and J.O. Babayemi
  The increasing level of pollution in both aquatic and terrestrial environment with which some animals which form part of human diet are constantly in contact has been a global concern, minding the contamination of aquatic and terrestrial organisms especially in countries which are prone to severe environmental pollution due to the lack of appropriate waste management system and technologies. In Nigeria as well as several other countries, meat from cattle is the most common hence, the need to assess the level of heavy metals in cow muscle tissue. The levels of Pb, Cd, Co, Zn, Cu and Fe were determined in the muscle tissue of 15 cattle at slaughter during 3 different seasons. The samples were digested and analyzed with atomic absorption spectrophotometer. The values ranged from ND-14.80 mg kg-1 at the on-set of rainy season; 0.01-3.53 mg kg-1 at the peak of rainy season and 0.005-3.90 mg kg-1 during the dry season.
  D.O. Nwude , P.A.C. Okoye and J.O. Babayemi
  The investigation was carried out to assess the level of accumulation of heavy metals in the liver of cattle at slaughter during three different seasons: on-set of rainy season (April-July, 2004), peak of rainy season (July-October, 2004) and dry season (January-April, 2005), to identify the season of probable highest accumulation, the most and the least accumulated metals, which might give some clue to any variation in seasonal heavy metal pollution. Pollution is one of the major environmental problems requiring attention globally. As a result of this global problem, contaminations of various sources of food for humans have been reported. Possible markers of environmental pollution have been sought for a proper evaluation of pollutants level and monitoring. Pollutant metals of environmental concern, including lead, cadmium, zinc, cobalt, copper and iron were studied in this investigation. Liver samples were collected from cows at slaughter at Awka abattoir; the samples were digested with phosphoric acid and analyzed for the heavy metals using atomic absorption spectrophotometer, model Shimadzu AA-6800. During the three seasons, Zn was bioaccumulated most (3.00 B 14.40 mg kg-1), followed by Pb (0.09 B 7.32 mg kg-1 and the least being Cd (0.001 B 0.03 mg kg-1). Statistical analysis showed a good correlation between the levels of Pb and Co, Pb and Zn and between Co and Zn, implying that cattle liver accumulations of Pb and Co are functions of Co and/or Zn levels in the liver. It could also be inferred that heavy metal bioaccumulation by cattle is affected by season.
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