O.w. MAKİNDE, T.a. ADESİYAN, İ.o. OLABANJİ, İ.a. TUNBOSUN, K.t OGUNDELE, O. ADELOWOTAN, E.a. OLUYEMİ

Assessment of Heavy Metals Bioavailability in Stream Sediments around A Gold Mining Environment in South-western Nigeria

In order to estimate environmental effects and the associated health risk of some of the metals determined in stream sediment samples in the mining area, the abundance of fractions of some of these metals: Cd, Pb, Fe, Cr and Cu that are bioavailable were determined using the modified Tessier extraction scheme. X-ray fluorescence spectrometer (XRF) was used in determining the total concentration of metals in sediments while metals concentrations in extracted fractions were determined with the use of atomic absorption spectrophotometer (AAS). Results obtained revealed different metals to be partitioned in different percentages in the fractions. The bulk of the metals were retained in the residual fraction for metals like Pb, Cd, Cr and Fe while only Cu has a greater percentage of the metal retained in the fraction bound to organic matter and sulphide and this is due to the affinity of the metal to organic compounds reacting to form stable complexes. Partitioning of the metals in the labile fractions is a measure of their bioavailability in sediments to benthic organisms.

Keywords:

Extraction, Bioavailability, Fractions, Partitioning, Residual, Mobility Factor,

PDF

___

Ahumada I, Mendoza J, Ascar L, (1999) Sequential extraction of heavy metals in soils irrigated with wastewater Commum. Soil Sci. Plant Anal., 30, 1507-1519
Baffi F, Iannim C, Soggia F, Magi E, (1998) Evaluation of the Acetate buffer Attack of a Sequential Extraction Scheme for Marine Particulate Metal Speciation Studies by Scanning Electron Mcroscop[y with Energy Dispersive X-ray Analysis. Anal. Chim., Acta, 360, 27-34.
Badaway SH, El-Motaium RA, (2000) Fate of Some Heavy Metals in Sandy Soil Amended with Sewage Sludge and their Accumulation in Plants. ICEHM2000, Cairo University, Egypt September, 483–494
Hall GEM, Vaive JE, Beer R, Hoashi M, (1996) Selective leaches revisited, with emphasis on the amorphous Fe Oxyhydroxide phase extraction. J. Geochem. Expl., 56: 59–78.
Jones RA, Mariani GM, Lee GF, (1981) Evaluation of the Significance of Sediment‐Associated Contaminants to Water Quality, Proc. Am. Water Resources Assoc.
Symposium, Utilizing Scientific Information in Environmental Quality Planning, AWRA, Minneapolis, MN, pp. 34‐45.
Kabala C and Singh BR, (2001) Fractionation and mobility of copper, lead, and zinc in soil profiles in the vicinity of a copper smelter. J. Environ. Quality, 30, 485–492.
Marco R, Serena M, Roberto F, Juan AC, (2005) Metal Speciation and Environmental Impact on Sandy Beaches due to El Savador Copper Mines. Marine Pollution Bulletin, 50, 62-72.
McKinney J, Ron R, (1992) Metal bioavailability: Environ. Sci. & Tech., 26, 1298-1299.
Ngole VM, (2011) Using soil heavy metal enrichment and mobility factors to determine potential uptake by vegetables. Plant Soil Environ., 57, 75–80
Raure G, Lopez-Sanchez JF, Sahuquillo A, Rubio R, Davidson C, Ure A and Quevauviller PH, (1999) Improvement of the BCR three step sequential extraction procedure prior to the certification of new sediment and soil reference materials. J. Environ. Monit. 1, 57-61
Salomons W, (1995) Environmental impact of metals derived from mining activities: Processes, predictions, prevention: J. Geochem. Expl., 52, 5-23.
Samir MS and Ibrahim MS, (2008) Assessment of Heavy Metals Pollution in Water and Sediments and their Effect on oreochromis niloticus in the Northern Delta Lakes, Egypt. 8th international symposium on tilapia in aquaculture, 475.
Sharmin S, Zakir HM, Naotatsu S, (2010) Fractionation Profile and mobility pattern of trace metals in sediments of Nomi River, Tokyo, Japan. J. Soil Sci. & Environ. Manag. 1, 1-14.
Tamunobereton-ari I, Uko ED and Omubo-Peppie VB, (2010) Anthropogenic Activities-Implications for Groundwater Resource in Okrika, River State, Nigeria. Res. J Appl. Sci. 5, 204-211.
Tessier A, Campbell PGC and Bisson M, (1979) Sequential Extraction Procedure for the Speciation of Particulate Trace Metals. Anal Chem. 51, 844-851.
Vaněk A, Borůvka L, Drábek O, Mihaljevič M, Komárek M, (2005) Mobility of lead, zinc and cadmium in alluvial soils heavily polluted by smelting industry. Plant Soil Environ., 51, 316-321.
Violante A, Cozzolino V, Perelomov L, Caporale AG, Pigna M, (2010) Mobility and Bioavailability of Heavy Metals and Metalloids in Soil Environments. J. Soil. Sci. Plant Nutr. 10, 268 – 292.
Yusuf KA, (2007) Sequential extraction of lead, copper, cadmium and zinc in soils near Ojota Wastesite. J. Agron., 6, 331-337

Journal of International Environmental Application and Science-Cover

ISSN: 1307-0428
Yayın Aralığı: Yılda 4 Sayı
Başlangıç: 2006
Yayıncı: Selçuk Üniversitesi

Arşiv