The research aims to determine the content of arsenic, mercury, cadmium and lead in 13 species of marine fish marketed in Salvador, Bahia, northeastern Brazil and assess the risk to human health associated with the consumption of these fish by using the Target Hazard Quotient (THQ) as a tool. The levels of these metals in fish are of great interest to the public health due to the toxicity of these elements and biomagnification in the food chain. The elements arsenic, cadmium and lead were determined by inductively coupled plasma mass spectrometry (ICP-MS) and mercury by cold vapor atomic absorption spectrometry (CVAAS). In general, intra and interspecific variations in arsenic concentrations were observed (0.01 - 1.85 mg kg ⁻¹), cadmium (0.03 to 0.32 mg kg ⁻¹), lead (< 0.01 - 0.10 mg kg ⁻¹) and mercury (0.001 - 1.85 mg kg ⁻¹), with arsenic having the highest levels in the vast majority of fish species, followed by mercury, cadmium and lead. THQ¿1 value was observed only for mercury in Seriola spp. and Mycteroperca intertitialis indicating a potential risk of consumption of these species.

这项研究旨在确定在巴西东北部的巴伊亚州萨尔瓦多市售出的13种海洋鱼类中砷，汞，镉和铅的含量，并通过使用目标危险度（ THQ）作为工具。由于这些元素的毒性和食物链中的生物放大作用，鱼类中这些金属的含量对公众健康非常重要。砷，镉和铅的元素是通过电感耦合等离子体质谱法（ICP-MS）测定的，汞是通过冷蒸气原子吸收光谱法（CVAAS）测定的。通常，观察到砷浓度（0.01-1.85 mg kg ^-1），镉（0.03至0.32 mg kg ^-1）的种内和种间变化。），铅（<0.01-0.10 mg kg ^-1）和汞（0.001-1.85 mg kg ^-1），其中砷在绝大多数鱼类中含量最高，其次是汞，镉和铅。仅在Seriola spp中的汞中观察到THQ¿1值。以及Mycteroperca intertitialis表示食用这些物种的潜在风险。