European Journal of Scientific Research - EuroJournals

352 E.A. Moses, J.C. Akan, V.O. Ogugbuaja and P.A. Onyeyili
Figure 3: Linear plot of Cr in Tissues of goat at various times following a single dose of dust (50mg/kg)
intratrachially
Figure 4: Linear plot of Cr in Tissues of goat at various times following a single dose of dust (50mg/kg)
Intravenously
The mean concentrations of zinc found in the tissues at 72 hours for intratracheally treated
goats were 110.5±19.2µg/g for lungs; 216.3±21,6µg/g for liver; 96.5±18.2µg/g for hearts and
153.2±25.5µg/g for kidneys (Figure 5). In intravenously treated animals, at 72 hours following dust
treatment, tissue concentrations were 93.2±16.4µg/g for lungs; 265.3±32.3µg/g for liver;
107.2±18.7µg/g for heart and 185.3±21.2µg/g for kidneys (Figure 6). Subsequently, there was decline
in the concentration of zinc and at day 21 post treatment substantial amounts were still detectable.