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Okoro I.A. and Abii T: Continental J. Environmental Sciences 5 (1): 13 - 19, 2011Carol S O, Day P A. Esser B and Randall S. (2002). Speciation and trace metals in estuarine sediments underreduced and oxidized conditions, seaplane, lagoon, Alameda Naval Air station (USA), Geochemical Trans,3(10), 81-101Duffus H (2001). Heavy Metals Toxicology, Chemical International India, 23 (6), 11-16.Forster U (2001). Land Contamination by Metals – Global Scope and Magnitude of Problems, in H.E. Allen etal (ed), Metal Speciaiton and Contamination of Soil, CRC Pres Boca Raton fl, pp 1 – 34.Gaya G U M and Ayodele J T (1994). Determination of lead in street dust to Index Pollution in Kanomunicipal, Spectrum J,I, 91-92.Graham D R and Stangoulis J C(2003). Trace element uptake and distribution in Plants. Crit Rev. Plant. Sci.,14,49-52.Garcia M J Band . Sosa M S (1994). Trace Metals in Valencia lake (Venezuela) Sediments, Water Air andSoils, International Journal of Environmental pollution, 77, 141 – 149.Hrudey, S E Chen W and , Rousseaux CG (1995). Bioavailability in Environmental Risk Assessment, LewisPub. Boca Raton Fl, pp 50 – 74.Kabia C andSingh B R(2001). Fractionation and mobility of Copper, Lead and Zinc in Soil profileapproximately a Copper Smelter communication in Soil Science and Plant Analysis. 30, 485 – 495.Karezewska A(1996). Metal Species distribution in top and sub soil in an area affected by smelter emission,Applied Geochemistry, 11, 35 – 42.Ma I Q and Rao G N and (1997). Chemical Fractionation of Cd, Cu, Ni, and Zn contaminated soils.Journals of Evironmental Quality, 26,259, 264.Narwal R P, Singh B R and Salibu B (1999). Association of Cadmium, Zinc, Copper and Nickel withcomponents in naturally heavy metal rich soils studied byparallel and sequential extraction, communication in soil science and Plant Analysis 30, 1209 – 1230.Okoro I A, Oriaku C I and Ejike E N (2007a). Lead Characterisation Street dust in some cities in SoutheasternNigeria, Research J. of Applied Sciences, 2(1)39-42.Okoro I A and Ejike E.N. (2007b). Sorption Models of Pb (11) removal from Aqueous Solution using commonedible fruit wastes, European J of scientific research. Vol 17 No 2, 270 – 276.Petya k, Rumiana Dand Irvelin K (2000). The representative smpling of plants for multi elements analysis,Photo logia Bcteria. 6(1), 91-102Purves D (1996). Trace Element Contamination of Environment, Elsevier, Amsterdam, Quanta chromecorporation, Nova 1200, gas sorption analyser manual, pp 11 – 27.Par do M T (2002). Sorption of Lead, Copper, Zinc and Cadmium by soils, effects of nitro acetic acid on metalretention, commune. Plant Anal. 31,31-40.Rai U U and Amit P(2002). Health Hazards of Heavy Metals. J. or environmentalPress Boca Raton fl, pp 19 – hazards, 2, 1 – 5.. Salibu B, Kreling T and Oungton D J (1998). Characterisation of Radioactive Particles in the environment,Analyst, 123, 843 – 849.Tessier A Campbell P G and . Bison M(1979). Sequential extraction Procedures for the speciation ofparticulate trace metal. Anal. Chem, 5, 1844 – 1851.18
Okoro I.A. and Abii T: Continental J. Environmental Sciences 5 (1): 13 - 19, 2011Terus (1995) A. Distribution of differential fractions of Cd, Zn, Pb and Cu in unpolluted and polluted soils,Water, Air and Soils Pollution, 83:1-4.United State environmental protection agency (1995). Test Methods for evaluating solid wastes Vol 1A,laboratory manual, physical and chemical methods SW846 3 rd Ed U. Washington gov. print office D.C., PP 1 –25Received for Publication: 24/04/2011Accepted for Publication: 28/06/2011Corresponding AuthorOkoro I.AChemistry Department, Michael Okpara University of Agriculture, Umudike, P.M.B 7267, Umuahia, AbiaState, Nigeria.19
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