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Research Article

Toxic Metals Uptake by Spinach (Spinacea oleracea) and Lettuce (Lactuca sativa) Cultivated in Sokoto: A Comparative Study

Hannatu A. Sani, A.I. Tsafe, B.U. Bagudo and A.U. Itodo
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Potentially toxic metals (Pb, Fe, Mn, Cr, Cd, Zn and Cu) concentration in selected vegetables namely; lettuce (Lactuca sativa) and spinach (Spinacea oleracea) was investigated alongside their harvesting site soil samples using Atomic Absorption Spectroscopy (AAS). Some physicochemical parameters viz; pH, moisture and ash contents of the plant were also determined. The estimated metal concentrations for the vegetables ranges from 1.59-2.07 ug/g, 211-364 ug/g, 7.0-7.5 ug/g, 5.00-5.25 ug/g, 0.01 ug/g, 20.4-24.12 ug/g, 0.8-1.1 ug/g for Pb, Fe, Mn, Cr, Cd, Zn, Cu respectively. The result showed that soils in industrial site are higher in heavy metals and that vegetable grown in the industrial sites is considerably higher in metal content than those grown in normal agricultural soils. It is also observed that vegetables differ in their ability for heavy metal uptake. Highest metal concentrations were observed in lettuce and lowest in spinach.

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Hannatu A. Sani, A.I. Tsafe, B.U. Bagudo and A.U. Itodo, 2011. Toxic Metals Uptake by Spinach (Spinacea oleracea) and Lettuce (Lactuca sativa) Cultivated in Sokoto: A Comparative Study. Pakistan Journal of Nutrition, 10: 572-576.

DOI: 10.3923/pjn.2011.572.576



1:  Aiboni, U.V., 2001. Characterization and classification of soils of a representative topographic location in the University of Agriculture, Abeokuta. Asset Series A, 1: 35-50.

2:  Amusan, A.A., V.D. Ige and R. Oluwale, 2005. Characteristics of soils and crops uptake of metals in municipal waste dump sites in Nigeria. J. Hum. Ecol., 17: 167-171.
Direct Link  |  

3:  Anthony, K. and S. Balwart, 2004. Heavy metals contamination of home grown vegetables near metal smelters in NSW. Sydney.

4:  AOAC., 1990. Official Methods of Analysis. 15th Edn., Association of Official Analytical Chemists, Washington, DC., USA., pp: 69-88

5:  Asibey-Berko, E. and F.A.K. Tayie, 1999. Proximate analysis of some under-utilized Ghanaian vegetables. Ghana J. Sci., 39: 91-96.
CrossRef  |  Direct Link  |  

6:  Audu, A.A. and A.O. Lawal, 2006. Variation in contents of plants in vegetable garden sites in kano metropolis. J. Applied Sci. Environ. Manage., 10: 105-109.
Direct Link  |  

7:  Ejeh, I.I. and V.A. Maikai, 2002. Copper, iron, zinc, manganese and lead content of raw and processed tomatoes. J. Agric. Technol., 10: 56-59.

8:  Hassan, L.G., K.J. Umar and A.A. Tijjani, 2007. Preliminary investigation on the feed quality of Monechma cilition seeds. Chem. Class J. Zaria, 4: 83-86.

9:  Hassan, L.G., K.J. Umar and A. Usman, 2005. Nutrient content of the leaves of Tribulus terrestris (Tsida). J. Trop. Biosci., 5: 77-82.

10:  Hassan, L.G. and K.J. Umar, 2006. Nutritional value of balsam apple (Momordica balsamina L.) leaves. Pak. J. Nutr., 5: 522-529.
CrossRef  |  Direct Link  |  

11:  Hanif, R., Z. Iqbal, M. Iqba, S. Hanif and M. Rasheed, 2006. Use of vegetable as nutritional food role in human health. J. Agric. Biol. Sci., 1: 18-22.
Direct Link  |  

12:  Kashif, S.R., M. Akram, M. Yaseen and S. Ali, 2009. Studies on heavy metals and their uptake by vegetables in adjoining areas of Hudiara drain in Lahore. Soil Environ., 28: 7-12.
Direct Link  |  

13:  Bridbord, K. and H.P. Stein, 1979. Health Implications of Trace Metals in Environment. In: Ultra Trace Metal Analysis in Biological Sciences and Environment, Risby, T.H. (Ed.). Advances in Chemistry Society, Washington, DC, ISBN13: 9780841204164, pp: 27-32

14:  Lone, M.I., S. Saleem, T. Mahmood, K. Saifullah and G. Hussain, 2003. Heavy metal contents of vegetables irrigated by sewage/tube-well water. Int. J. Agric. Biol., 4: 533-535.
Direct Link  |  

15:  Mensah, J.K., R.I. Okoli, J.O. Ohaju-Obodo and K. Eifediyi, 2008. Phytochemical, nutritional and medicin properties of some leafy vegetables consumed by Edo people of Nigeria. Afr. J. Biotechnol., 7: 2304-2309.
Direct Link  |  

16:  Miller-Ihli, J.N. and A.S. Baker, 2000. Food and Dairy Products, Applications of Atomic Spectroscopy. In: Encyclopedia of Spectroscopy and spectrometry, Vol. 3, Tranter, G.E., J.C. Lindon and J.L. Holmes (Eds.). Academic press, London, pp: 583-588

17:  Nwaogu, L.A., C.O. Ujowundu and A.I. Mgbemena, 2006. Studies on the nutritional and phytochemical composition of Amaranthus hybridus leaves. Bio-Research, 4: 28-31.
CrossRef  |  Direct Link  |  

18:  Ojeka, O.F. and T.J. Ayodele, 1997. Determination of selected heavy metal in infant milk product in Nigerian market. Nig. J. Technical Educ., Nutr. Board Technical Educ. Kaduna, 14: 167-175.

19:  Saggo, M.I.S. and A. Grewal, 2003. Safely evaluation of leafy vegetables grown over chromium amended soil. Environ. Inf. Arch., 1: 591-596.
Direct Link  |  

20:  Uba, S. and A. Uzairu, 2008. Heavy metals leaves in soils and Amaranthu spinusis of dumpsites in Zaria Metropolis, Nigeria, Nigeria. Biol. Environ. Sci. J. Tropics, 5: 110-116.

21:  Umar, K.J., L.G. Hassan, S.M. Dangoggo and M.J. Ladan, 2007. Nutritional composition of water spinach (Ipomoea aquatica Forsk.) leaves. J. Applied Sci., 7: 803-809.
CrossRef  |  Direct Link  |  

22:  Uwah, E.I., N.P. Ndahia and V.O. Ogugbuaja, 2009. Study of the levels of some agricultural pollutants in soils and water leaves (Talinum triangulare) obtained in Maiduguri, Nigeria. J. Applied Sci. Environ. Sanitation, 4: 71-78.
Direct Link  |  

23:  Wallace, A., 1992. Participation of silicon in cation-anion balance as a possible mechanism for aluminum and iron tolerance in some gramineae. J. Plant Nutr., 15: 1345-1351.
Direct Link  |  

24:  WHO, 1996. Mental health care law: Ten basic principles. Geneva World Health Organization.

25:  Yahaya, Y., 2009. Study of the environmental effects on the nutrient compositions of some selected vegetables in Aliero agricultural fields. Ph.D. Thesis, Department of Chemistry, Usman Danfodiyo, University Sokoto.

26:  Aiwonegbe, A.E. and E.U. Ikhuoria, 2007. Levels of selected heavy metals in some Nigerian vegetables. Trends Applied Sci. Res., 2: 76-79.
CrossRef  |  Direct Link  |  

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