The levels of metallic trace elements were determined in fishery products sampled from Tunisian fishing ports. Mean concentrations were 0.20 ± 0.01, 0.05 ± 0.01, and 0.10 ± 0.01 mg/kg in fish flesh for Hg, Cd, and Pb, respectively. The mean concentrations of these elements were below regulatory thresholds; however, we also detected some specimens with higher levels. The mercury level showed a significant difference between fish categories, region, and year of sampling (p < 0.05). Samples from the center sites had the highest levels of Pb (0.17 ± 0.03 mg/kg; range 0.10; 0.22 mg/kg). Temporal analysis of Pb showed a significant difference between sampling year (p < 0.05). In addition, distribution among fish categories was statistically significant (p = 0.046). The rates of samples exceeding limits of Hg, Cd, and Pb were 5.3, 2.6, and 0.4%, respectively. Through the above results, the maximum weekly and monthly intakes for fish flesh consumption could not exceed the set limits. These data were important to inform consumers about fish content and the risk generated by some of these species.

中文翻译：

---

突尼斯水产品受汞、镉和铅污染：水平估计和人类健康风险评估。

在从突尼斯渔港取样的渔业产品中测定了金属微量元素的含量。鱼肉中汞、镉和铅的平均浓度分别为 0.20 ± 0.01、0.05 ± 0.01 和 0.10 ± 0.01 mg/kg。这些元素的平均浓度低于监管阈值；但是，我们也检测到了一些含量较高的样本。汞含量在鱼类类别、区域和采样年份之间显示出显着差异（p < 0.05）。来自中心站点的样品的铅含量最高（0.17 ± 0.03 mg/kg；范围 0.10；0.22 mg/kg）。Pb 的时间分析显示采样年份之间存在显着差异（p < 0.05）。此外，鱼类类别之间的分布具有统计学意义（p = 0.046）。样品超标 Hg、Cd 和 Pb 的比例分别为 5.3、2.6 和 0.4%，分别。通过上述结果，每周和每月食用鱼肉的最大摄入量不能超过设定的限制。这些数据对于告知消费者鱼类含量和其中一些物种产生的风险非常重要。