Health risk assessment of heavy metals in Cyprinus carpio (Cyprinidae) from the upper Mekong River
Health risk assessment of heavy metals in Cyprinus carpio (Cyprinidae) from the upper Mekong River
复制标题
湄公河上游鲤科鱼类重金属健康风险评估
DOI：
10.1007/s11356-019-04291-2
复制
发表时间：
2019-04-01
影响因子：
5.8
通讯作者：
Chen, Li Qiang
中科院分区：
文献类型：
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作者：
Zhang, Ji Lai;Fang, Li;Chen, Li Qiang
本研究的目的是量化的浓度的重金属（锌，铜，砷，铅，镉，汞）在水和普通鲤鱼（鲤鱼）在湄公河上游的鱼组织，从而阐明潜在的饮食健康风险，从当地居民的鱼类消费。地表水和鱼组织（鳃，肌肉，肝脏和肠）从四个代表性的样品区（影响级联的四个水坝）沿着进行了分析的重金属浓度。结果表明，鱼体内重金属含量具有组织依赖性。最高的Cu和As水平被发现在肝脏中，最高的Zn和Pb水平发生在肠道中，最高的Hg水平被发现在肌肉中。居民长期食用鱼类的总目标危害商数（THQ）值为1，因此，当地居民面临重大健康风险。本研究的结果提供了一个整体的认识，在水和鱼体沿着湄公河上游的梯级大坝的影响下的空间和组织分布，并强调了潜在的健康风险的As为当地居民的长期鱼类消费。
The purposes of this research are to quantify the concentration of heavy metals (Zn, Cu, As, Pb, Cd, and Hg) in the water and fish tissues of common carp (Cyprinus carpio) in the upper Mekong River and to thereby elucidate the potential dietary health risks from fish consumption of local residents. Surface water and fish tissues (gill, muscle, liver, and intestine) from four representative sample areas (influence by a cascade of four dams) along the river were analyzed for heavy metal concentrations. Results revealed that the levels of heavy metals in fish were tissue-dependent. The highest Cu and As levels were found in the liver; the highest Zn and Pb levels occurred in the intestine, and the highest Hg level was found in the muscle. The total target hazard quotient (THQ) value for residents is > 1 for long-term fish consumption, and local residents are, therefore, exposed to a significant health risk. Results from the current study provide an overall understanding of the spatial and tissue distribution of heavy metals in water and fish body along the upper Mekong River under the influence of cascade dams and highlight the potential health risk of As for the local residents of long-term fish consumption.