包括As在内的有毒元素浓度,Hg,Pb,Zn,Cr,Co,Cu,Cd,在古吉拉特邦Kutch区的褐煤矿区评估了锰和锰。它主要是在土地使用中评估的,如开垦的矿山土壤,核心区土壤,路边土壤,和参考农业土壤沿不同深度的土壤层。路边土壤中汞含量最高(5.36mg/kg),砷(18.2mg/kg),铅(34.5mg/kg),和锰(464mg/kg)。相比之下,核心区土壤锌含量最高(93.4mg/kg),铬(52.3mg/kg),钴(19.2mg/kg),和镉(5.65毫克/千克),分别。许多土壤指数,包括污染因子,地质积累指数,生态风险因子(ERF),和生态风险指数(ERI)表明,研究区域位于中度污染到极高污染区域内,中度污染到未污染范围内。路边土壤和核心区土壤的(Eif)(Hg)表示高潜在生态风险类别,而复垦矿区显示出相当大的潜在生态风险。矿区(121-327)所有场地的Eif(Cd)可置于高潜在生态风险下,和其余的金属(As,Pb,Zn,Co,Cu,Cr,而Mn)可以归入低生态风险范畴。在这三个地点(即,回收矿场,路边土壤,和核心区土壤),(10-20厘米)的核心区土壤显示出最高的ERI值为660.48(10-20厘米),表明高生态风险。Cd和Hg分别占ERI值的48%和38%。层次聚类分析(HCA)表明,Cu和Mn彼此紧密相连,并且源自相似的起源和地球化学组成。本研究结果解释褐煤矿区附近的土壤被有毒元素污染。是的,因此,建议对被检地区土壤样品中的有毒元素进行常规监测,应建议采取补救措施,以防止有毒元素在土壤中积累并进一步进入食物链。
Toxic element concentrations including As, Hg, Pb, Zn, Cr, Co, Cu, Cd, and Mn were assessed in lignite mining areas of the Kutch district of Gujarat. It was assessed mainly in land uses like reclaimed mine soil, core zone soil, roadside soil, and reference agricultural soil along the soil layer of different depths. Roadside soil has the highest concentration of mercury (5.36 mg/kg), arsenic (18.2 mg/kg), lead (34.5 mg/kg), and manganese (464 mg/kg). In comparison, the core zone soil has the highest concentration of zinc (93.4 mg/kg), chromium (52.3 mg/kg), cobalt (19.2 mg/kg), and cadmium (5.65 mg/kg), respectively. Numerous soil indices including contamination factor, geo-accumulation index, ecological risk factor (ERF), and ecological risk index (ERI) showed that the study area lies within the moderate contamination to very high contamination zone and moderately polluted to the unpolluted range. The (Eif) (Hg) for roadside soil and core zone soil indicated high potential ecological risk category, while reclaimed mine site indicated considerable potential ecological risk. The Eif (Cd) in all sites in the mining area (121-327) can be put under high potential ecological risk, and the rest of the metals (As, Pb, Zn, Co, Cu, Cr, and Mn) can be put under low ecological risk category. In the three sites (i.e., reclaimed mine site, roadside soil, and core zone soil), core zone soil of (10-20 cm) showed the highest ERI value of 660.48 (10-20 cm), indicating high ecological risk. Cd and Hg contribute to 48% and 38% of ERI value. Hierarchical cluster analysis (HCA) suggested that the Cu and Mn were closely linked with each other and derived from similar origin and geo-chemical composition. The results of this study interpreted that the soil near the lignite mining area was contaminated with toxic elements. It is, therefore, recommended that the routine toxic element monitoring in the soil sample of the examined area should be done, and remediation action should be advised to prevent the accumulation of toxic elements in the soil and further into the food chain.