Cadmium and Chrome concentration levels in Red mullet and European hake from Albanian coastal waters
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Keywords:
Red Mullet, European Hake, Cadmium, Chrome, AlbaniaAbstract
This study investigates the accumulation levels of cadmium (Cd) and chromium (Cr) in edible
tissue of two commercially important fish species, Red mullet and European hake sampled from the
Albanian coastal waters. Fish samples were classified in two size groups, small and large fish size.
Concentration levels of Cd and Cr expressed in mg kg wet weight were measured by using absorption
spectrophotometry. The average mean concentration levels of Cd and Cr were determined and compared
between small and large individuals to assess possible size-dependent bioaccumulation patterns. Results
indicate slightly higher mean Cd and Cr concentration levels in larger fish size of both fish species, though
differences were not statistically significant (p > 0.05). The measured values of cadmium resulted in both
fish size higher than the maximum permissible limits established by the European Commission for human
consumption, suggesting health risk to local consumers. Continued monitoring of both fish species is
recommended to assess potential changes in metal bioaccumulation linked to regional contamination
sources.
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