Determination Of Levels Of Eight Trace Metals In Ground Water Sources Within And Around Lafia Metropolis

Abstract

The levels of eight trace metals (As, Co, Cr, Cd, Pb, Al, Ni and Mn) were determined in ground water sources in Lafia town and its environs using Atomic Absorption Spectrophotometry (AAS). In the wet season(WS), the highest mean concentrations(mg/L) of trace metals from boreholes (BH) was Mn(0.7787 +0.2389) in Lafia West while the least was Pb(0.0049 +0.0001) in Lafia South. Similarly for hand –dug wells (HDW) in wet season, the highest was Mn(0.6227 + 0.0260) in Lafia West while the least was As(0.0106 + 0.0001) in Lafia East. In dry season(DS), the highest mean concentration of trace metals from BH was Mn(0.3815 + 0.0907) in Lafia West while the least was Cr(0.0042 + 0.0001) in Lafia South. Similarly for HDW in dry season, the highest was Mn(0.3588 + 0.0762) in Lafia West while the least was Ni(0.0065+0.0001) in Lafia Central. The results indicate that these ground water sources were polluted more prominently in wet season.