工业活动有可能用多种重金属(HM)污染土壤。在加纳,然而,对工业区土壤HM污染的评估仍然有限。因此,阿克拉工业区之一的HM土壤污染,加纳被评估。采集土壤样本并分析HMs,包括Fe,Zr,Zn,Ti,Sr,Rb,Mn,Pb,Cu,和Co,使用X射线荧光(XRF)。确定了HM地球化学阈值(GTT),以确定土壤HM污染水平并确定需要修复的区域。此外,进行了风险评估,以评估与这些金属相关的潜在生态和人类健康风险。铁的平均浓度,Zn,Rb,Sr,Zr,Ti,Mn,Co,Cu,土壤中的Pb分别为:27133.83、147.72、16.30、95.95、307.11、4663.66、289.85、418.54、44.97和112.88mg/kg,分别。一般来说,HMs的浓度随深度而降低,尽管一些下层表现出升高的HM水平。土壤污染水平被归类为低铁,Rb,Zr,Ti,Mn,Co,和铜;对Sr和Zn适中;对Pb相当。值得注意的是,研究区域的西北部显示出相当高的HM污染程度。虽然土壤中的HMs具有较低的生态风险,人类健康风险评估表明,Co,特别是在儿童中。土壤中HMs的存在被认为是源于自然地质现象和人类活动。包括工业运营,农业实践,填埋活动,和车辆排放。
Industrial activities have the potential to pollute soils with a wide variety of heavy metals (HMs). In Ghana, however, assessment of HM pollution of soils in industrial areas remains limited. Accordingly, HM soil pollution in one of the industrial areas in Accra, Ghana was assessed. Soil samples were taken and analysed for HMs, including Fe, Zr, Zn, Ti, Sr, Rb, Mn, Pb, Cu, and Co, using X-Ray Fluorescence (XRF). HM geochemical threshold values (GTVs) were determined to establish soil HM pollution levels and identify areas needing remediation. Furthermore, risk assessments were conducted to evaluate the potential ecological and human health risks associated with these metals. The mean concentrations of Fe, Zn, Rb, Sr, Zr, Ti, Mn, Co, Cu, and Pb in the soils were: 27133.83, 147.72, 16.30, 95.95, 307.11, 4663.66, 289.85, 418.54, 44.97, and 112.88 mg/kg, respectively. Generally, the concentrations of HMs decreased with depth, although some lower layers exhibited elevated HM levels. Soil pollution levels were categorized as low for Fe, Rb, Zr, Ti, Mn, Co, and Cu; moderate for Sr and Zn; and considerable for Pb. Notably, the northwestern part of the study area displayed a considerable to very high degree of HM contamination. While HMs in the soils posed low ecological risk, the human health risk assessment indicated potential health effects from Co, particularly in children. The presence of HMs in the soils was noted to originate from both natural geological phenomena and human activities, including industrial operations, agricultural practices, landfill activities, and vehicular emissions.