The samples were analyzed by the derivative potentiometric stripping technique;
and the results were expressed asμg/g of wet weight. The obtained range of metals infish species was
0.024–0.111μg/g for cadmium, 0.057–0.471μg/g for lead, 0.799–4.790μg/g for copper and 3.226–11.390μg/g
for zinc.