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Ramamoorthy Ayyamperumal¹, Kajal Kumari², M Suresh Gandhi³

¹MOE Key Laboratory of Mineral Resources in Western China, College of Earth Sciences, Lanzhou University, Lanzhou, Gansu Province- 730000, PR China; MOE Key Laboratory of Western China's Environmental System, College of Earth and Environmental Sciences, Lanzhou University, Lanzhou-730000, PR China.

|July 24, 2023

概括

泰米尔纳德邦的沿海沉积物污染显示出大量的污染,其他金属如和铜也存在. 大多数地区都存在污染,因此需要制定保护这些重要的海洋生态系统的战略.

科学领域:

环境科学环境科学
海洋地质海洋地质学
地质化学地质化学

背景情况:

沿海和海洋污染对自然生态系统构成重大威胁.
了解影响重金属分布的因素对于有效的污染控制至关重要.
泰米尔纳德州的东海岸容易受到各种污染源的影响,影响其海洋环境.

研究的目的:

调查和评估重金属 (Fe,Mn,Zn,Cr,Pb,Co和Cu) 在泰米尔纳德州东海岸的表面沉积物中的分布.
评估重金属污染的水平及其生态风险.
确定沿海地区沉积重金属的主要来源.

主要方法:

使用了地理信息系统 (GIS) 和遥感技术.
在表面沉积物样本中分析重金属度 (Fe,Mn,Zn,Cr,Pb,Co,Cu).
污染因子 (CF),地质积累指数 (Igeo),污染负载指数 (PLI),生态风险指数 (ERI) 和平均效应范围中位数 (M-ERM-Q) 的计算.

主要成果:

沉积物中没有Fe,Mn或Zn的污染,Co,Cu和Pb的轻微污染,以及Cr的严重污染.
重金属污染的顺序是:Cr > Pb > Cu > Co > Mn > Zn > Fe. 这些重金属污染的顺序是: Cr > Pb > Cu > Co > Mn > Zn > Fe.
污染负荷指数 (PLI) 表示大多数地点的污染,生态风险指数 (ERI) 显示Cr,Pb,Cu,Mn和Zn是关键的风险因素.

结论:

(Cr) 是主要令人担忧的重金属,表明沉积物受到严重污染.
虽然大多数重金属似乎是自然产生的,但人为投入是沿海地区沉积的主要驱动因素.
这些发现为制定减轻污染和保护沿海地区的实际战略提供了框架.

关键词:

沿海沉积物的沉积物生态风险生态风险地质信息系统 - 遥感技术危险的污染物危险的污染物统计分析统计分析

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