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Direct Research Journals
Direct Research Journal of Agriculture and Food Science:Vol.5 (9), pp. 312-322, September 2017
ISSN 2354-4147

Heavy Metals Status on Irrigated Urban Farming Sites of Katsina City, Nigeria
Article Number: DRJA139504681
DOI: https://doi.org/10.26765/DRJAFS.2017.DRJA139504681

Original Research Article


Abdu Yaro, Yusuf Ibrahim El-Ladan, Lawal Abdulrashid* and  Aminu Zakari


Department of Geography, Umaru Musa Yar’adua University, P.M.B. 2218, Katsina, Nigeria.

*Corresponding author E-mail:  funtua2009@yahoo.com.


date Received: August 2, 2017     date Accepted: September 5, 2017     date Published: September 9, 2017

Abstract

This study investigates the concentration of heavy metals in soil under urban irrigation farming in some selected sites in Katsina city. Soil samples were collected from 0-15 cm, 20-30 cm, and 40-50 cm and analyzed for heavy metals (Pb, Cd, Cu, Cr, Zn, Fe, Mn, and Ni) using atomic absorption spectrophotometry. T-test was used to compare the mean values of the various heavy metals, Product moment correlation was employed to assess the level of correlation among the investigated metals. Analysis of the soil samples collected show traces of heavy metals at different soil depth and there are variations of pollution index values in the selected irrigated sites. Cadmium (Cd), Copper (Cu), Manganese (Mn) and Nickel (Ni) were the dominant pollutants in the sites. It was concluded that the irrigated sites are polluted by waste water, though the pollution index value indicates moderate pollution level.


Key words: Wastewater, soil pollution, heavy metals, urban farming, Katsina city