Environmental Toxicology & Bioremediation Laboratory, Department of Zoology, University of Lucknow, 226007, Lucknow, India.
C.S.J.M. University, Kanpur, India.
Biol Trace Elem Res. 2020 Feb;193(2):536-547. doi: 10.1007/s12011-019-01736-0. Epub 2019 May 1.
In this study, the pattern of metals concentration in water, sediment, plants, and three edible fish species (Channa striata, Labeo rohita, and Catla catla) of different trophic levels, captured from Jajmau (Kanpur), an important fishery area of river Ganga in Uttar Pradesh, India was examined. The heavy metals, Ni, Pb, Fe, Cu, Zn, Cd, Cr, and Co, were estimated in the liver, kidney, muscles, and gill tissues of abovesaid species of fish. The highest metal concentration was reported in the bottom feeder fish as compared with the column and surface feeders. The result obtained after analysis of water sample reflects the order of occurrence of heavy metals as Fe > Cr > Pb > Ni > Cd > Zn > Cu > Co. Sediments analysis indicates high concentration of Fe and Cr, making the entire environment from top to bottom, stressful. Target hazard quotient (THQ) and hazard index (HI) of the three species suggest a potential risk to the health of consumers, the humans. Thus, it is inevitable that the river Ganga should be closely monitored to safeguard human health. Graphical Abstract.
本研究对印度北方邦恒河重要渔业区贾木瑙（坎普尔）的水、沉积物、植物以及三种不同营养级别的食用鱼类（条纹叉尾鮰、鲤鱼和印度鲃）中的金属浓度模式进行了检测。在上述鱼类的肝脏、肾脏、肌肉和鳃组织中测定了镍（Ni）、铅（Pb）、铁（Fe）、铜（Cu）、锌（Zn）、镉（Cd）、铬（Cr）和钴（Co）等重金属的含量。与柱形和水面觅食者相比，底栖鱼类的金属浓度最高。水样分析结果反映了重金属的出现顺序为 Fe＞Cr＞Pb＞Ni＞Cd＞Zn＞Cu＞Co。沉积物分析表明铁（Fe）和铬（Cr）浓度较高，使整个从上到下的环境都承受压力。三种鱼类的目标危害系数（THQ）和危害指数（HI）表明，它们可能会对消费者（人类）的健康造成潜在风险。因此，必须对恒河进行密切监测，以保障人类健康。
