加纳Atiwa东区非法矿区重金属污染风险分析

S. Wiafe, Sarah Fanny Hackman Duncan, Boakye Ebenezer, Samuel Yeboah Baako
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摘要

通讯作者:Samuel Wiafe,加纳Sunyani技术大学土木工程系Email: samwafy@yahoo.co.uk摘要:本研究旨在测定加纳Atiwa东区非法矿区土壤中重金属(Cr、Cu和Hg)的污染水平。采用原子吸收光谱法测定了土壤中铜(Cu)、铬(Cr)和汞(Hg)的浓度。对研究场地重金属污染程度及污染风险评价进行了分析。从区内3个非法矿区采集了30个土壤样本。土壤中Cu、Cr和Hg的平均含量分别为8.8、6.75和3.19 mg / kg,均高于WHO标准。得到的Cu、Cr和Hg的地质累积指数(Igeo)分别为1.92、3.8和6.5,表明研究点土壤受到中度至重度污染。该研究有助于建立研究区当地重金属地球化学基线浓度(GBCs),以便采取适当的修复方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Pollution Risk Analysis of Heavy Metals at Illegal Mining Sites at Atiwa East District, Ghana
Corresponding Author: Samuel Wiafe Department of Civil Engineering, Sunyani Technical University, Ghana Email: samwafy@yahoo.co.uk Abstract: This study aims at determining the level of pollution of heavy metals (Cr, Cu and Hg) in the soils of illegal mining sites in Atiwa East District of Ghana. The concentrations of Copper (Cu), Chromium (Cr), and Mercury (Hg) in the soils were determined using Atomic Absorption Spectrometry (AAS). The extent of heavy metal pollution and pollution risk assessment was analyzed at the study site. Thirty (30) soil samples were collected from three (3) illegal mining sites within the district. The average levels of Cu, Cr, and Hg in the soil were 8.8, 6.75, and 3.19 mgkg respectively, and were all above the WHO threshold. The geo accumulation indices (Igeo) of Cu, Cr, and Hg obtained were 1.92, 3.8, and 6.5 respectively, indicating moderately to extremely polluted soil at the study sites. The research has helped to establish the local Geochemical Baseline Concentrations (GBCs) of heavy metals in the study area so that an appropriate remediation method could be employed.
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