PHYSICOCHEMICAL ANALYSIS AND DETERMINATION OF HEAVY METALS CONCENTRATION OF BOREHOLE WATER SAMPLES COLLECTED FROM BINDAWA LOCAL GOVERNMENT AREA OF KATSINA STATE, NIGERIA.

Abstract

This study assessed the levels of some physicochemical parameters of borehole water samples from Bindawa local government area of Katsina State. The water samples were collected from Doro, Shibdawa, Tama, Agalawa and analyzed for heavy metals (Cd, Fe, Pb, Cr & Cu) using AAS, while physicochemical parameters were determined using standard analytical methods. The concentrations range for Cd are 0.1 mg/L to 0.2 mg/L(0.13±0.05), above (WHO, 2017) limit, Fe 0.04mg/L to 0.11mg/L(0.07±0.03) within WHO limit, Pb 0.1mg/L to 1.1mg/L(0.51±0.48)
above WHO limit, Cr 0.04mg/L to 0.07mg/L(0.06±0.02) with samples from Doro and Agalawa above WHO limit, Cu 0.45mg/L to 0.7 mg/L(0.56±0.11) within WHO limit. The results for the pH were 6.9, 6.4, 6.6, and 7.2 for Doro, Shibdawa, Tama, and Agalawa respectively (6.8±0.35). Calcium hardness were found to be; (146.25, 99.45, 157.95 and 163.02) mg/L, while Magnesium hardness were; (1.17, 7.02, 8.78 and 1.95) mg/L for Doro, Shibdawa, Tama and Agalawa respectively. Most of the physicochemical parameters determined were within standard limits, except for water sample in Shibdawa with pH value that deviate the WHO limit. The findings of the research suggested that the water in these areas is not fit for human consumption but can be used for some other purposes.