This study assessed if the concentrations of methylmercury (MeHg) in predatory and non-predatory fish caught in the Upper Solimões River are safe for human consumption, according to the reference values established by the Joint FAO/WHO Expert Committee on Food Additives (JECFA). MeHg concentrations were evaluated in muscle of 5 predatory and 4 non-predatory fish species by gas chromatography with electron capture detector (GC-ECD). MeHg concentrations in predatory (0.09 mg kg⁻¹) and non-predatory (0.04 mg kg⁻¹) fish were under the safe upper limit for human consumption. The general average concentration of MeHg in these fish were 0.05 mg kg⁻¹. The Estimated Weekly Intake of MeHg was higher than the provisional tolerable weekly intake in both predatory and non-predatory fish, especially for women. Due to the high rates of fish consumption in the Amazon, the risk assessment based only on the concentration of MeHg in fish may not be accurate.

中文翻译：

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亚马逊三国市场出售的掠食性和非掠食性鱼类中的甲基汞。

这项研究根据粮农组织/世卫组织食品添加剂联合专家委员会确定的参考值，评估了在苏里木斯河上游捕获的掠食性鱼类和非掠食性鱼类中甲基汞的浓度是否可以安全食用。 。通过电子捕获检测器（GC-ECD）气相色谱法评估了5种捕食性鱼类和4种非捕食性鱼类的肌肉中的MeHg浓度。掠食性鱼类（0.09 mg kg ^-1）和非掠食性鱼类（0.04 mg kg ^-1）中的MeHg浓度低于人类食用的安全上限。这些鱼类中甲基汞的一般平均浓度为0.05 mg kg ^-1。掠食性鱼类和非掠食性鱼类的估计每周甲基汞摄入量均高于暂定可耐受的每周摄入量，特别是对于女性。由于亚马逊地区鱼的消费率很高，仅基于鱼中甲基汞的浓度进行的风险评估可能不准确。