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Determination of Heavy Metal Contaminants in Leafy Vegetables Cultivated By the Road Side

By Surukite O. Oluwole, Olubunmi Makinde S. C, Kafeelah A. Yusuf, O. Fajana, Ayobami O. Odumosu and Laghos Nigeria

Abstract

Abstract:- A study was conducted to analyze the heavy metals in some leafy vegetable cultivated by roadside including Talium triangulare, Amaranthus hybridus and Telfairia occidentalis. The vegetables were sampled from different areas of Ojo local goverment. The vegetables were digested using 98 % nitric acid (HN03) and analyzed with the aid of Atomic Absorption Spectrophotometer(AAS) to determine heavy metals. The mean concentration for each heavy metal in the samples gotten from each sites were calculated and the comparison of these data was done amongst the three differnt locations. These were compared with the permissible levels set by the FAO and WHO. Results showed that the levels of Copper and Cadmium for the leafy vegetables ranged from 0.3944 ± 0.159 to 1.6559 ± 0.919 and from 0.0854 ± 0.043 to 0.2563 ± 0.249mg/kg dry weight respectively. While that of Zinc and Lead was 1.8028 ± 0.111 to 6.2267 ± 1.572 and 0.0856 ± 0.040 to 2.104 ± 1.490mg/kg. When compared with standards, heavy metal levels were found to be within safe limit which is an indicator that the leafy vegetable in Ojo local government area are safe for consumption without the risk of environmental toxicants

Topics: Heavy metals
Year: 2014
OAI identifier: oai:CiteSeerX.psu:10.1.1.415.7622
Provided by: CiteSeerX
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