Heavy metals in seafood purchased from a fishery market in Hungary

Abstract

Heavy-metal content (arsenic, cadmium, lead and mercury) was investigated and evaluated in shellfish, oysters and squids. The samples were collected weekly for 20 weeks from a fishery product market in Hungary. The concentration of heavy metals was measured by Inductively Coupled Plasma Optical Emission Spectrometer (ICP-OES) analysis after sample preparation. The results were analysed statistically by one-way ANOVA method. The average concentration of arsenic (3.01 ± 1.46 mg kg) in shellfish was significantly higher (p < 0.001) compared to oysters (2.88 ± 1.12 mg kg) and squids (1.28 ± 0.52 mg kg). The level of mercury was below the limit of detection (0.5 mg kg) in each sample and there was no statistical significance in the concentrations of cadmium (p = 0.351) and lead (p = 0.412) in the species investigated. The provisional tolerable intake values were also calculated. Based on the obtained results of the heavy-metal content of the investigated samples, the seafood is considered to be safe for human consumption. However, prolonged ingestion of oysters and squids at these levels may contribute to the consumers' cadmium burden.

Monitoring and Dietary Exposure Assessment of Elements in Mediterranean Mussels in İstanbul, Türkiye

“…Compared with other studies, Guéguen et al, (2011) found the similar mean level of cadmium (0.15 mg/kg) in mussels from France as in the present investigation. Lehel et al, (2018) determined slightly higher mean values in shell sh marketed in Hungary, up to 0.26 mg/kg. Joksimovic and Stankovic, (2011) reported a higher mean concentration of Cd (0.84 mg/kg) in mussel's tissue from Montenegro.…”

“…According to the Australia standard and EU ( 2001), the maximum level permitted for arsenic in sh is 1.0 mgkg -1 . Lehel et al (2018) found a mean total arsenic concentration of 3.01 mg/kg in shell sh. Joksimovic and Stankovic (2011) (Lehel et al 2018;WHO, 2021).…”

“…Compared with other studies, similar results are reported by Joksimovic and Stankovic (2011), where Hg mean concentration in mussels originating from Montenegro was 0.05 mg/kg. Also, Lehel et al, (2018) reported low levels of Hg in shell sh marketed in Hungary. The levels of Hg in mussels from the French and Spanish Mediterranean coast were in the range of 0.02-1.24 and 0.03-2.21 mg/kg d.w., respectively, while in the Adriatic Sea they were 0.02-0.50 mg/kg d.w. (Jovic et al, 2011;Stanković and Jovic, 2012).…”

“…Arıcı and Bat (2016) reported similar levels of lead in Mediterranean mussels (Mytilus galloprovincialis) from Turkey, which ranged from 0.05-0.7 mg/kg, as well as Guéguen et al, (2011), who reported 0.49 mg/kg ww for Pb in shell sh of the main marketed species at the bay of the Seine. Lehel et al, (2018) investigated heavy metal concentrations in seafood from a sh market in Hungary and reported a mean value of 0.95 mg/kg in shell sh.…”

Analysis of the accumulation, depuration and methylation of mercury in pacific oysters ( Crassostrea gigas ) and clams ( Meretrix meretrix ) using the two‐compartment kinetic model

“…(Harada, 1995;Roditi & Fisher, 1999;Takaoka et al, 2008). As a result, Hg safety in fish and shellfish has gradually become the focus of people's attention (Lehel et al, 2018). However, the relationship between the concentration of dissolved Hg(II) in water and the content of Hg and MeHg in aquatic products has not been elucidated, so it is urgent to find a model for simulation calculations of Hg.…”