© Journal Of Chemical Society Of Nigeria (jcsn) . 2010. Vol. 35 No. 2
Publisher: Chemical Society of Nigeria
Temporal Trends of Heavy Metals In Shrimps (MACROBRACHIUM MACROBRACHION) From A Non-Tidal Fresh Water Ecosystem
I. E. Agbozu, K. Opuene, C. M. A. Iwegbue
KEYWORDS: Heavy metals, Shrimps, freshwater swamp, Taylor creek
ABSTRACT:Temporal trends of heavy metals (Zn, Cd, Ni, Pb and Mn) in Shrimps (Macrobrachium macrobrachion) from a non-tidal freshwater ecosystem in the Niger Delta in Nigeria, are presented in this study. Samples of shrimps were collected with local fishing basket traps from the sampling points for two years and the selected metals were determined by atomic absorption spectrophometry. Elevated levels of the metals were recorded in the Macrobrachium macrobrachion from all the sampling locations. Generally, higher levels of heavy metals were recorded in samples from the Flow Station Location for Oil and Gas operations, which was down a concentration incline from the Flow Station. In Macrobrachium macrobrachion, not several significant correlations (P < 0.05) were obtained. Only Cd-Pb (r=0.85), ZnPb (r=0.81), Ni-Pb (r=0.75), and Zn-Cd (r=0.59) were correlated, which indicated that the mechanism for uptake of the correlated metals might be common.
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