Article Number: DRJA139504681
DOI: https://doi.org/10.26765/DRJAFS.2017.DRJA139504681
ISSN: 2354-4147

Vol.5 (9), pp. 312-322, September 2017

Copyright © 2017
Author(s) retain the copyright of this article


Original Research Article

Heavy Metals Status on Irrigated Urban Farming Sites of Katsina City, Nigeria

Abdu Yaro

Yusuf Ibrahim El-Ladan

Lawal Abdulrashid*

Aminu Zakari


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


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


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