Department of Geology, PG Extension Centre, Periyar University, Dharmapuri 636701, Tamil Nadu, India.
Department of Geology, University of Madras, Guindy Campus, Chennai 600025, Tamil Nadu, India.
Mar Pollut Bull. 2020 Nov;160:111565. doi: 10.1016/j.marpolbul.2020.111565. Epub 2020 Aug 28.
The present study investigates the concentration of acid leachable trace metals (ALTMs) and their ecological risk in the beach sediments of Coromandel Coast, Southern India. In total, thirty-six beach sediments (eighteen samples from low tide and eighteen samples from high tide) were collected from the study area. The results of the study of the ALTMs suggest that the sediments are enriched by natural processes with significant anthropogenic influences. The distribution of ALTMs in beach sediments is in the following descending order: Fe > Cr > Mn > Pb > Ni > Cu > Co > Zn. The statistical results indicate that the metal concentrations were chiefly originated from natural processes such as leaching, weathering, and fluvial action. In addition, the textural characteristics, organic matter, and calcium carbonate percentage play an important role in the distribution of metals in the beach sediments.
本研究调查了印度南部科罗曼德尔海岸海滩沉积物中酸可提取痕量金属 (ALTM) 的浓度及其生态风险。在研究区域共采集了 36 个海滩沉积物（低潮时采集 18 个样本，高潮时采集 18 个样本）。对 ALTM 的研究结果表明，沉积物受到自然过程的富集，同时受到显著的人为影响。海滩沉积物中 ALTM 的分布顺序如下：Fe > Cr > Mn > Pb > Ni > Cu > Co > Zn。统计结果表明，金属浓度主要来源于自然过程，如淋溶、风化和河流作用。此外，质地特征、有机质和碳酸钙百分比在金属在海滩沉积物中的分布中起着重要作用。
