Comparative study of trace metals accumulated in the muscle tissues of the most common and marketable sea food in Alexandria waters
Title:
Comparative study of trace metals accumulated in the muscle tissues of the most common and marketable sea food in Alexandria waters
Author:
Naga, Wafica M. Aboul
Appeared in:
International journal of environmental health research
Paging:
Volume 6 (1996) nr. 4 pages 289-300
Year:
1996-12
Contents:
Concentrations of iron, zinc, manganese, copper, nickel, lead, cadmium and chromium were measured in soft tissues of four fish species (Diplodus vulgaris, Box boops, Siganus rivulatus and Sardinella aurita), lamellibranchiata (Sepia elagans), three Crustacea (Penaeus japonicus, Penaeus semisulcatus and Portunus pelagicus) and one species of algae (Ulva rigida) collected from the main fishery areas of Alexandria: El-Mex Bay, Abu-Qir Bay and Qayet-Bey area. Results showed that trace metals are accumulated at different extent in the soft tissues. The order of abundance of trace metals in all fish species and the other biological samples was Fe> Zn> Mn> Cu> Ni> Pb> Cd> Cr. Excepting zinc, trace metal concentrations among fish species were lower than that in the other biological samples. Iron was by far the dominant metal in all samples examined, it seems that it may influence the accumulation of the other metals. Correlation between trace metal concentrations and body weight and lipid content were not significant but significant correlation was found between fish weight and Zn concentration (r = 0.5242) and lipid content and Zn and Cu concentrations (r = 0.8496 and 0.9172, respectively). Concentration factors of trace metals for fish species decrease in the order Ni> Pb> Cr> Fe> Mn> Cd> Cu while for Crustacea species in the order of Ni> Pb> Cu> Cr> Fe> Mn> Cd. Nickel and lead were the most bioaccumulated metals with a wide range of concentration factors, while Cd revealed the lowest (CF). Based on these results, the mean concentrations of trace metals in fish flesh were below the National Health and Medical Research Council (NHMRC) standards.
Journal description