Abstract

Anthropogenic activities are the major source of chemical pollutants including heavy metals in the coastal ecosystem which may accumulate in the aquatic organisms through the food web. Metal contamination in the marine fish pose serious threat to human health. This study deals with the human health risks of metal accumulation from Sarda orientalis consumption. The quantities of heavy metals were investigated in muscle, gills, and liver of striped bonito from the commercial landings of Karachi Fish Harbor, Pakistan (northern Arabian Sea). Risk for human health was evaluated by iron, zinc, manganese, copper, lead, cadmium, estimated daily intake, hazard index, and risk index. The hazard index value is <1, indicating that the estimated exposure is below reference dose for the relevant metals for monsoon, winter, and pre-monsoon. The mean hazard index for iron, zinc, manganese, copper, lead, and cadmium was 1.20 × 10⁻² for consumers. The mean risk index of lead for S. orientalis was 7.39 × 10⁻⁹. As a result, the metals did not exceed the World Health Organization’s and the United States Environmental Protection Agency’s toxicological reference.

摘要

人为活动是沿海生态系统中包括重金属在内的化学污染物的主要来源，这些污染物可能通过食物网在水生生物中积累。海洋鱼类中的金属污染对人类健康构成严重威胁。本研究探讨了东方萨尔达鱼中金属积累对人类健康的风险消耗。对来自巴基斯坦卡拉奇鱼港（阿拉伯海北部）商业上岸的条纹鲣鱼的肌肉、鳃和肝脏中的重金属含量进行了调查。通过铁、锌、锰、铜、铅、镉、估计每日摄入量、危害指数和风险指数评估对人体健康的风险。危害指数值<1，表明估计暴露量低于相关金属在季风、冬季和季风前期的参考剂量。对于消费者而言，铁、锌、锰、铜、铅和镉的平均危害指数为 1.20 × 10 ^-2。S. orientalis铅的平均风险指数为 7.39 × 10 ^-9. 因此，这些金属没有超过世界卫生组织和美国环境保护署的毒理学参考值。