Department of Geography, Bharathi Women's College, Chennai 600 108, India.
Department of Geology and Mining, Thiru.Vi.Ka. Industrial Estate, Guindy, Chennai 600 032, India.
Mar Pollut Bull. 2021 Feb;163:111964. doi: 10.1016/j.marpolbul.2020.111964. Epub 2021 Jan 12.
Heavy metal content in water, sediment, and tissues of six commonly used edible fishes from Adyar estuary, southeast coast of India, was assessed for metal bioaccumulation. The enrichment of metals in estuarine sediment is due to the discharge of contaminated water from the Chennai Metropolis. The enrichment factor indicated that metals such as Cr (EF=30.9) and Cu (EF=31.9) are highly enriched and fall under the very severe category. Bioaccumulation factor (BAF) revealed that the concentration of heavy metals viz. Ni, Cr, Pb, Cu, Co, Zn, Fe, and Mn in different tissues of fishes was several times higher than their concentrations in water. Moreover, high concentration of heavy metals, especially Cu and Cr was noticed in the muscle and liver tissues of the fishes which are higher than the WHO standards. Among the studied fishes, Arius parkii and Gerres oyena showed higher levels of bioaccumulation in terms of toxic metals.
对印度东南海岸阿德iyar 河口六种常用食用鱼的水、沉积物和组织中的重金属含量进行了评估，以研究金属的生物累积情况。由于金奈大都市排放受污染的水，河口沉积物中的金属得到了富集。富集因子表明，Cr（EF=30.9）和 Cu（EF=31.9）等金属高度富集，属于非常严重的类别。生物累积因子（BAF）表明，鱼类不同组织中重金属（如 Ni、Cr、Pb、Cu、Co、Zn、Fe 和 Mn）的浓度比其在水中的浓度高几倍。此外，在鱼类的肌肉和肝脏组织中发现了高浓度的重金属，尤其是 Cu 和 Cr，高于世界卫生组织的标准。在所研究的鱼类中，Arius parkii 和 Gerres oyena 表现出更高水平的生物累积，特别是在有毒金属方面。
