- September 13, 2020
- Posted by: RSIS Team
- Categories: Agriculture, IJRIAS
International Journal of Research and Innovation in Applied Science (IJRIAS) | Volume V, Issue III, March 2020 | ISSN 2454–6186
Adebayo, R.K.1*, Hassan, U.F.1, Adamu, H.M.1, Hassan, H.F.2, Baba, Haruna3, Ajiya, D.A.1
1Department of Chemistry, Abubakar Tafawa Balewa University, Bauchi, Bauchi State, Nigeria
2Department of Community Medicine, Aminu Kano Teaching Hospital, Kano State, Nigeria
3Department of Chemistry, College of Education, Minna, Niger State, Nigeria
*Corresponding Author
Abstract: Untreated water is widely used for irrigation in water scarce regions in several States of Nigeria including Bauchi State. The nutrients contained in the wastewater are considered as beneficial to agriculture, the contaminants present in it can pose environmental and health risk. Irrigated farms could be used to improve the food productivity in the country. The concentrations of heavy metals (Cd, Cr, Cu, Mn, Ni and Pb) in irrigation and non-irrigation soils of Railway Quarters, Bauchi were analysed using fractionation methods and determined using Atomic Absorption Spectrophotometry. In the exchangeable bound fraction, the results revealed the highest concentrations (mg/kg) of Cd (0.22), Cu (60.00) and Mn (33.00) in the irrigation soil, whilst those of Cu (20.00) and Cd (0.33) in non–irrigation soil. The highest concentrations (mg/kg) in the residual bound fraction was observed in Cr, Ni and Pb in the irrigation soil, as well as Cr, Mn, Ni and Pb in non–irrigation soil. The fractional sum of all the metals in the six fractions (exchangeable, carbonate, manganese oxide, iron-manganese, organic matter sulphide and residual) were found to be (mg/kg): lead (29.00), copper (298.00), cadmium (0.66), chromium (11.00), manganese (167.00) and nickel (72.00). The results revealed that all the observed concentrations are within the permissible limits of DPR (2002) and WHO/FAO (2001) with the exception of that of copper and nickel. The non-irrigation soil showed the cumulative sum of the levels (mg/kg) of the heavy metals in the six fractions: Pb (10.00), Cu (44.30), Cd (0.36), Cr (5.65), Mn (67.27) and Ni (6.00) are within the threshold levels of WHO/FAO (2001) and DPR (2002) respectively. The observed values to some extent do not pose health threat to the inhabitants and consumers
