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Lead and cadmium contents in the edible parts (muscle, fillet) of 17 commercially used fish species from South Egypt River Nile (Aswan) were determined by means of DPSAV (differential pulse stripping anodic voltammetry). In the sample preparation step, all fish samples were lyophilised, milled in a ball mill and finally decomposed by using mixed acid (HNO 3 + HClO 4 ). The accuracy of the concentrations determined in this study was checked by the measurements of the certified reference material CRM No. 422, cod muscle from the Commission of the European Communities, Community Bureau of Reference. All Pb 2+ and Cd 2+ concentrations observed from species of Egypt River Nile showed that fish from this area are a good source of these essential elements and the developed method is accepted as a good analytical routine method for these samples.
Al‐Hossainy et al. (Fri,) studied this question.