Department of Civil Engineering, Manipal Institute of Technology, Manipal Academy of Higher Education, Manipal, 576 104, India.
Geosciences Division, Physical Research Laboratory, Navrangpura, Ahmedabad, 380009, India.
Environ Sci Pollut Res Int. 2023 Jan;30(4):9914-9931. doi: 10.1007/s11356-022-22812-4. Epub 2022 Sep 6.
Trace metals act as a limiting nutrient and prerequisite for primary productivity in marine environments. The distribution of metals in dissolved phase along the salinity gradients of Swarna, Sharavati and Kali estuaries in southwestern India, during post and pre-monsoon seasons, were studied. We have investigated the behaviour of trace metals in the estuarine environment and their extent of impact on human health and ecosystem. The study revealed, non-conservative behaviour of dissolved Mn, Fe, Ni, Cd and Co in the estuaries. Whereas Cu behaved non-conservatively in post-monsoon and conservatively in pre-monsoon seasons. Risk assessment studies revealed that higher chronic daily intake (CDI) in humans, through dermal pathway, in Swarna and Sharavati estuaries during post-monsoon, whereas it was during pre-monsoon season in the Kali estuary. Hazard Index values for the studied metals in adults and children are below risk thresholds, though children are more prone to health risk through the dermal pathway.
痕量金属是海洋环境中初级生产力的限制营养物质和前提。本研究调查了印度西南部斯瓦纳、沙拉瓦蒂和卡利河口在季风前后季节盐度梯度下溶解相痕量金属的分布。我们研究了痕量金属在河口环境中的行为及其对人类健康和生态系统的影响程度。研究表明，溶解态 Mn、Fe、Ni、Cd 和 Co 在河口表现出非保守行为。而 Cu 在季风后表现为非保守，在季风前表现为保守。风险评估研究表明，在季风后，斯瓦纳和沙拉瓦蒂河口通过皮肤途径，人类的慢性日摄入量（CDI）更高，而在卡利河口则是在季风前季节。尽管儿童通过皮肤途径更容易受到健康风险的影响，但对于成年人和儿童来说，所研究金属的危害指数值均低于风险阈值。
