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⁻¹) in shellfish was significantly higher (p < 0.001) compared to oysters (2.88 ± 1.12 mg kg⁻¹) and squids (1.28 ± 0.52 mg kg⁻¹). The level of mercury was below the limit of detection (0.5 mg kg⁻¹) 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.

对贝类，牡蛎和鱿鱼中的重金属含量（砷，镉，铅和汞）进行了调查和评估。每周从匈牙利的水产品市场收集样品，持续20周。样品制备后，通过电感耦合等离子体发射光谱仪（ICP-OES）分析测量重金属的浓度。用单向方差分析法对结果进行统计分析。 与牡蛎（2.88±1.12 mg kg ^-1）和鱿鱼（1.28±0.52 mg kg ^-1）相比，贝类中砷的平均浓度（3.01±1.46 mg kg ^-1）显着更高（p <0.001 ）。汞含量低于检出限（0.5 mg kg ^-1）在每个样本中的含量， 并且 在所调查物种中镉（p = 0.351）和铅（p = 0.412）的浓度方面无统计学意义。还计算了临时的容许摄入量。根据所调查样品的重金属含量得出的结果，海鲜被认为可安全食用。但是，长时间摄入这些水平的牡蛎和鱿鱼可能会加重消费者的镉负担。