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- W2566054186 abstract "The bioconcentration factors (BCF) of heavy metals in the tissues oftropical crab ( Carcinus sp) obtained from River Aponwe in Ado-Ekiti,Nigeria, were determined. Nine heavy metals (As, Cd, Cu, Hg, Mn, Ni,Pb, Se and Zn) were studied. Tissues from the chest region as well asfrom the appendages were collected and their bioconcentration factorsseparately determined. The bioconcentration factors obtained for thevarious heavy metals in the chest region and the appendages arerespectively as follows: As (0.50, 0.40). Cd (3.75, 3.00); Cu (1.83,1.71); Hg (0.83, 0.50); Mn (0.15, 0.14); Ni (0.11, 0.09), Pb (0.20,0.19); Se (0.37, 0.38) and Zn (5.00, 4.89). Bioconcentration factorsobtained for As, Hg, Mn, Ni, Pb and Se were all less than 1.00 implyingno bio-accumulation. However, bioconcentration factors greater than1.00 obtained for Cu, Cd and Zn evidently indicated that the metalswere highly bio-accumulated and bio-magnified. Zn with the highestbioconcentration factors was the most bio-accumulated and bio-magnifiedof all the metals studied. There is a growing concern about thephysiological and behavioural effects of environmental trace metals inhuman population. Toxicities of heavy metals at high levels ofexposures are well known, but of a major concern is the possibilitythat continual exposure to relatively low levels of these metalsthrough regular consumption of the crabs may entail adverse healtheffects." @default.
- W2566054186 created "2017-01-06" @default.
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- W2566054186 date "2009-08-20" @default.
- W2566054186 modified "2023-09-25" @default.
- W2566054186 title "Bioconcentration Factors of Heavy Metals in Tropical Crab ( Carcinus sp) From River Aponwe, Ado-Ekiti, Nigeria" @default.
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