Determination of some Inorganic Constituents of Drinking Water in Elnuhud Area, West Kordofan State, Sudan

Abstract

In this study four samples of ground water were collected from Elnuhud area (Elnuhud City, Wadbanda City, Elbaltagy village Abukheratesh village) West Kordofan State - Sudan ,and analyses were performed the following parameters ( pH, EC, TDS), hardness as CaCO3 , cations (Na+ , K+ and Ca+2 ) , an aions ( Cl- , SO4 -2 ,CO3 -2 and HCO3 - ). The results showed that the pH values for all sample falls between (7.05 - 7.78), hence all the samples were slightly alkaline (pH > 7). The results of electrical conductivity (EC) for all the samples between (145 -538 µmohs/cm) were in agreement with those values reported by WHO standards.TDS values for all the samples falls between (88 - 370 ppm) were within the permissible value of WHO (1000 ppm). The results of chloride ion (Cl- ) concentration for all the samples falls between (23.8 - 129 ppm) were in agreement with WHO standards (250 ppm Cl- ) .The results showed that the concentration of sulfate for all the samples is (0.05 - 0.164 ppm) in permissible level of WHO standards (400ppm). The results showed that the concentration of carbonate ion (CO3 -2 ) for all the samples between (24-48 ppm).Also the results showed that the concentration of bicarbonate ion (HCO3 - ) for all the samples between (42.7-61ppm) in permissible level of WHO standards (500 ppm). For hardness, two samples (A and B) (70 - 86 ppm) were classified as moderately soft, and another two samples (C and D) (136 - 190 ppm) were classified as slightly hard and moderately hard respectively. The concentration of cations: Na+ between (9.78 - 40 ppm), K+ between (0.0574 - 4.21 ppm) and Ca+2 between (6 - 13.6 ppm) for all the samples were within the permissible level of WHO (200 ppm Na+ , 10 ppm K+ and 200ppm Ca2+). From the study we found that all water samples were accepted for all purposes