Bioaccumulation of Heavy Metals in Commercially Important Edible Marine Fishes
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Date
2014
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Abstract
He avy metal d i sp o s ed th rough
anthropogenic activities finds their way into
the oceans and seas through the rivers or
through direct fallout from factory effluents.
These heavy metals re-suspend back into
water column along with the sediments and
are known to affect the marine animals. The
objective of this study was to determine
chromium, nickel, c a dmium and zinc
concentration levels in edible marine fishes
collected from the coastal area of Tuticorin,
India. Measurement of heavy metal content
of the selected fish was carried out by using
atomic absorption spectrophotometer. The
metal content, expressed in pg g"' wet weight
for chromium, nickel, cadmium and zinc
varied from 4.706-9.020, 3.307-16.760, 9.053-
9.480 and 9.878-12.126 respectively. The
values were comparable and in the range of
the literature values. The results of this
study indicate that the selected fish have
concentrations well below the standards of
FAO/WHO levels of these toxic metals
except chromium.