Journal of Biological Sciences1727-30481812-5719Asian Network for Scientific Information10.3923/jbs.2012.376.384IdrissA.A. AhmadA.K. 72012127The purpose of this study were to determine the concentration
of heavy metals namely copper (Cu), cadmium (Cd) and lead (Pb) in sediment and
to investigate the effect of sediment pH and sediment organic matter on concentration
of copper, cadmium and lead in sediment at oxidation fraction from Juru River,
Penang, Malaysia. The sequential extraction procedure used in this study was
based on defined fractions: exchangeable, acid reduction, oxidation and residual.
The concentration of Cu, Pb and Cd in residual fraction were higher than the
other fractions. Among the non-residual fractions, the concentration of heavy
metals in organic matter fraction was much higher than other fractions collected
from all sampling sites except for Cd. The pH of the sediment in all sites was
acidic. The mean of total concentrations of Cu, Cd and Pb for the two sampling
times were 667, 4.135 and Pb 927 μg g^{-1} dry weight, respectively.
Results of organic matter analysis showed that the percentage of organic matter
present in sediment samples varied throughout the river and all sites of sediments
were ranged from 7.10 to 16.20%. Comparison between sampling sites using one-way
analysis of variance showed that there were significant differences at exchangeable
fraction for cadmium and lead while there was no significant differences for
copper. At acid reduction fraction and oxidation fraction there were significant
differences for the three metals while there was no significant difference at
residual fraction.]]>Arain, M.B., T.G. Kazi, M.K. Jamali, N. Jalbani, H.I. Afridi and J.A. Baig,2008Badri, M.A.,1984Boscolo, R., F. Cacciatore, D. Berto and M. Giani,2007Cieri, E., B. Giussani, A. Pozzi, C. Dossi and S. Recchia,2008Dean, J.R.,2003Duddridge, J.E. and M. Wianwright,1981Elith, M. and S. Garwood,2001Fernandes, H.M.,1997Forstner, U.,1985Ikem, A., N.O. Egiebog and K. Nyavor,2003Kabala, C. and B.R. Singh,2001Kabata-Pendias, A. and H. Pendias,2000Kamaruzzaman, B.Y., N.T. Shuhada, B. Akbar, S. Shahbudin and K.C.A. Jalal et al.,2011Nemati, K., N.K. Abu Bakar, M.R. Abas and E. Sobhanzadeh,2011Kersten, M. and U. Forstner,1986Kong, I.C. and S.M. Liu,1995Lim, P.E. and M.Y. Kiu,1995Ma, L.Q. and G.N. Rao,1997Ebrahimpour, M. and I. Mushrifah,2008Olausson, E. and I. Cato,1980Pagnanelli, F., E. Moscardini, V. Giuliano and L. Toro,2004Pekey, H.,2006Peng, S.H., W.X. Wang, X.D. Li and Y.F. Yen,2004Preda, M. and M.E. Cox,2002Sager, M.,1992Salomons, M.,1980Schoer, J.,1985Soylak, M. and S. Yilmaz,2006Tessier, A., P.G.C. Campbell and M. Bisson,1979Vogel-Mikus, K., D. Drobne and M. Regvar,2005Thlaspi praecox Wulf. (Brassicaceae) from the vicinity of a lead mine and smelter in Slovenia.]]>Walkley, A. and I.A. Black,1934Wang, H., C.X. Wang, Z.I. Wang and Z.H. Cao,2004Xiangdong, L., S. Zhenguo, W.H.W. Onyx and L. Yok-Sheung,2000Yang, Z., Y. Wang, Z. Shen, J. Niu and Z. Tang,2009Yap, C.K. and S.G. Tan,2008Anadara granosa.]]>Naji, A., A. Ismail and A.R. Ismail,2010