ABSTRACT
The water samples were collected in clean polyethylene containers rinsed with de-ionised water and acidified with HNO3 then were labeled properly, the water samples were placed in ice bags before transportation to the lab for analysis. The acid pre-treatment ensured that the heavy metals present did not get adsorbed to the surface of the container during transportation and storage.
The method used for analyzing for the presence of some of the heavy metals in the sample was AAS(atomic absorption spectroscopy). In the result obtained from the analysis;
In the water samples from the borehole, all heavy metals was detected except Ni and mercury while in the water samples from the well only mercury wasn’t detected.
Chromium was found in all samples within the range of 0.01mg/l to 0.02mg/l.. Zinc was found in all samples within the range of 0.04mg/l to 0.09 mg/l. Iron was detected in all samples within the range of 0.04mg/l to 0.06mg/l. Cadmium was detected in all samples within the range of 0.01mg/l to 0.03mg/l. Nickel was found in the water samples from the well in the concentration 0.01mg/l.
The results obtained were compared with WHO standard, from the results the water from the borehole and wells in Afuze community is safe from consumption.
