In this study, the concentrations of Cd and Hg were measured in muscle of juvenile individuals at an importan fishing ground in southeastern Gulf of California to assess the health risk to human consumers considering elemental levels and rate of shark consumption in NW Mexico. Twenty-eight individuals were sampled in September 2019. Quantification of Hg was made by cold vapor-atomic absorption spectrophotometry, analyses of Cd were made by graphite furnace atomic absorption spectrophotometry. In general, average Hg (1.27 µg g⁻¹ dry weight) concentrations were higher than Cd (0.059). In comparison to results of Cd and Hg in muscle of several species of genus Rhizoprionodon sp., our reported concentrations were comparable. Maximum permissible limits (Cd 0.5 and Hg 0.5 µg g⁻¹ wet weight) in fish products for human consumption were not exceeded. Health risk assessment to shark consumers indicated that Hg is of more concern than Cd but no hazards exist.

在这项研究中，在加利福尼亚湾东南部的一个重要渔场测量了青少年肌肉中 Cd 和 Hg 的浓度，以评估考虑到墨西哥西北部的元素水平和鲨鱼消费率对人类消费者的健康风险。2019 年 9 月对 28 名个体进行了采样。Hg 的定量采用冷蒸气原子吸收分光光度法，Cd 的分析采用石墨炉原子吸收分光光度法。一般来说，平均 Hg（1.27 µg g ^-1干重）浓度高于 Cd（0.059）。与几种根瘤菌属的肌肉中 Cd 和 Hg 的结果相比，我们报告的浓度具有可比性。最大允许限值（Cd 0.5 和 Hg 0.5 µg g^-1湿重）在供人类食用的鱼产品中未超过。对鲨鱼消费者的健康风险评估表明，汞比镉更受关注，但不存在危害。