Evaluation of the heavy metals (mercury, lead, and cadmium) contamination of sardine (Sardina pilchardus) and swordfish (Xiphias gladius) fished in three Algerian coasts

Abstract

Aim: This study aimed to evaluate mercury (Hg), cadmium (Cd), and lead (Pb) levels in 70 samples of sardine (Sardina pilchardus) and 30 samples of swordfish (Xiphias gladius) fished in the Algerian coasts. Materials and Methods: After the mineralization of the fish samples through the pressure digestion, the analyses were carried out by inductively coupled plasma atomic emission spectroscopy. Results: Mean concentrations of Hg, Cd, and Pb in sardine were 0.62, 0.55, and 2.13 mg/kg wet weight, respectively, while in swordfish, the concentrations were 0.56, 0.57, and 3.9 mg/kg wet weight, respectively. These results exceeded the Algerian and European legislation threshold values, whereas Hg's concentration in swordfish remained close to and did not exceed the recommended thresholds (0.56 mg/kg wet weight). Conclusion: This fish may represent a hazard for consumers in Algeria. Systematic and periodic controls of heavy metals in fish are recommended, and risk assessment is needed to protect the consumer.

Non-carcinogenic and Carcinogenic Health Risk Evaluation from Fish Contaminated with Heavy Metals

“…These values are higher than values reported for fish samples from some selected fresh water bodies in Katsina State" [8] and Jabi lake, Abuja [30] all in Nigeria. The range is also higher than values reported in samples from three coastal regions of Algeria [31] and the values reported for marine fish from Zhejiang, China [32]. A previous report have indicated an above MAC level for water sample from the study area which was attributed to the proximity of the area to a metal quarry site, vehicular exhaust contamination, agricultural activities and petroleum product conveying trucks that are frequently washed at the study site [13].…”

“…"The range of Zn levels in the fish were low when compared to the Zn level reported by Mehouel et al [31] in fish samples from Algeria and higher than the values reported in a previous study in Katsina State, Nigeria [8]. But the values were within the 100 mg/kg MAC for Zn in fish" [36].…”

EFFECT OF GRADED LEVELS OF DIETERY PLANT PROTEIN ON ELEMENTAL CONCENTRATION OF HYBRID (Catla catla? x Labeo rohita?) FROM PAKISTAN

“…Physical and chemical properties of elements are also important for bioaccumulation [18,19,20]. With respect to the present study, variations in concentration of different elements may be due to difference in the ratios of ingredients in three dietary protein feeds.…”

A Food-Safety Risk Assessment of Mercury, Lead and Cadmium in Fish Recreationally Caught from Three Lakes in Poland

“…Pb, Cd, and Hg concentration in the muscles of R. rutilus , E. lucius, and P. fluviatilis from the Dratów, the Syczyńskie, and the Czarne Sosnowickie lakes did not exceed the acceptable values. According to the results of studies by other authors, the content of Pb, Cd, and Hg in the muscles of various food fish species was 0.03–8.62 mg kg −1 by weight [ 65 , 66 ], 0.02–0.74 mg kg −1 by weight [ 65 , 67 , 68 ], and 0.056–0.89 mg kg −1 by weight [ 69 , 70 ], respectively. The comparison of Pb, Cd, and Hg content in the muscles of the three studied fish species with the content of such metals in muscles of various food fish species indicated that the content of said metals in the muscles of the three studied fish species was low.…”