Evaluation of Heavy Metals from Soil and Lettuce Grown in Irrigated Farmlands of Kaduna Metropolis Nigeria

W. L. O. Jimoh ； Mahmud Imam Mohammed

《Asian Journal of Agricultural Sciences》 4卷2期 (2012/03) Pp. 102-107

並列摘要

The aim of this research study is to determine the level of heavy metal such as cadmium, copper and lead were investigated in soil and lettuce grown in irrigated farmlands of Kaduna metropolis so as to ascertain the extent of pollution. Concentrations of heavy metals were determined using atomic absorption spectrophotometer. The results obtained were compared with limit recommended by FAO/WHO (2007) Allimentarius standard so as to ascertain the extent of their pollution. The level of cadmium in lettuce ranged from 0.03-1.37 :g/g. The concentrations of lead was found to be in range of 0.96-3.81 :g/g, were above the limit stipulated by WHO while copper concentration ranged from 0.27-4.97 :g/g were within the recommended limit given by the FAO/WHO (2007) standard. This suggests that the lettuce grown in the studied areas were prone to lead and cadmium toxicity as at the time of this research work. Pearson correlation shows positive correlation between soil and vegetable (lettuce) in these irrigation sites.

並列關鍵字

Atomic absorption spectrophotometer ； heavy metals ； Kaduna metropolis ； lettuce ； Nigeria ； soil