Abbas Mahmoud Mahrous M, EKraim Yasmine Mohamed, Alnasser Abdullah S, Ghanem Mohamed H
Zoology and Entomology Department, Faculty of Science, Al-Azhar University, Cairo, 11884, Egypt.
Faculty of Natural Resources and Environmental Sciences, Department of Marine Resources, Omar El-Mokhtar University, Al Bayda, Libya.
Sci Rep. 2025 Sep 1;15(1):32047. doi: 10.1038/s41598-025-15942-5.
This study focuses on the levels of heavy metals (HMCs) in the commonly consumed marine fish from the Aqaba Gulf, Red Sea, Egypt. It evaluates the effectiveness of soaking treatments as a novel approach to reducing HMCs. The order of metals varied among species, with sigan and bongos fish following Mn < Ni < Cu < B < Fe < Zn, while mallas fish followed Mn < Ni < Cu < Zn < Fe < B. The highest level in untreated samples was observed in sigan for Zn (67.60 ± 2.34 µg/g ww-b), while the lowest was recorded in bongos for Mn (0.96 ± 0.07 µg/g ww-b). Soaking treatments significantly reduced HMCs in all species, as confirmed by environmental risk indices. Risk assessments revealed that the hazard index (HI-HMCs) values for children often exceeded the acceptable threshold of HI-HMCs ≤ 1, suggesting potential health risks despite reductions achieved through soaking. Among the soaking methods, the mixed soaked treatment, which combined salt and apple vinegar, showed the most pronounced reduction in metal levels, demonstrating a synergistic effect. In conclusion, while soaking treatments effectively mitigate HMCs contamination, further efforts are required to develop safer fish processing methods, particularly to safeguard vulnerable groups like children.
本研究聚焦于埃及红海亚喀巴湾常见食用海鱼中的重金属含量。它评估了浸泡处理作为一种减少重金属含量的新方法的有效性。不同物种的金属含量顺序各不相同，篮子鱼和牛鼻鲼遵循锰＜镍＜铜＜硼＜铁＜锌的顺序，而马拉鱼遵循锰＜镍＜铜＜锌＜铁＜硼的顺序。未处理样本中锌含量最高的是篮子鱼（67.60±2.34微克/克湿重），而锰含量最低的是牛鼻鲼（0.96±0.07微克/克湿重）。环境风险指数证实，浸泡处理显著降低了所有物种中的重金属含量。风险评估显示，儿童的重金属危害指数（HI-HMCs）值经常超过HI-HMCs≤1的可接受阈值，这表明尽管通过浸泡实现了降低，但仍存在潜在健康风险。在浸泡方法中，将盐和苹果醋混合的浸泡处理使金属含量降低最为显著，显示出协同效应。总之，虽然浸泡处理有效地减轻了重金属污染，但仍需要进一步努力开发更安全的鱼类加工方法，特别是要保护儿童等弱势群体。
