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Cadmium In Nigeria Essay

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ASSESSMENT OF CADMIUM AND LEAD CONTENTS IN TISSUES OF TILAPIA AND CAT FISH SPECIES SOLD IN NSUKKA, NIGERIA Abstract The levels of cadmium and lead in the tissues of dried Clarias gariepinus and Oreochromis niloticus fish sold in Nsukka were investigated using Atomic Absorption Spectrometer. The study revealed mean Cd levels of 0.0015 and 0.0024µgg-1 for bones, gills and flesh respectively with a grand mean level of 0.0018µgg-1 in dried Clarias gariepinus. The average Pb concentrations of 0.0384, 0.0752 and 0.0299 µgg-1 for bones, gills and flesh respectively of the same dried Clarias gariepinus were also obtained with a grand mean level of 0.0478µgg-1. This study further revealed mean Cd concentration of the tissues of dried Oreochromis niloticus …show more content…

From the result, the general trend for the mean concentration of cadmium in the tissues revealed that; Flesh> Gills (Bones). The average lead concentrations of the same tissues of the dried Clarias gariepinus are 0.03841, 0.07521 and 0.02990 µgg-1 for the bones, gills and flesh respectively, with a grand average concentration of 0.04781µgg-1. The general trend for the average concentration of lead in the tissues showed that; Gills>Bones>Flesh. The average cadmium concentrations of the tissues of dried Oreochromis niloticus fish are 0.00161, 0.00140 and 0.00121µgg-1 for the bones, gills, and flesh respectively with a grand average cadmium concentration of 0.0014 1µgg-1 . The general trend for the average Cadmium concentration in the tissues showed that: Bone> Gills> Flesh. The mean lead levels for the same tissues of the dried Oreochromis niloticus fish under investigation were found to be 0.04511, 0.05751 and 0.03130µgg-1 for the bones, gills and flesh respectively with an overall average lead concentration of 0.04460µgg-1. The general trend in this case revealed that lead concentration in:

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