Assessment of trace metals contamination in stream sediments and soils in Abuja leather mining, southwestern Nigeria

作     者：Abiola Oyebamiji Adegbola Odebunmi Hu Ruizhong Atta Rasool 

作者机构：State Key Laboratory of Ore Deposit Geochemistry Instituteof Geochemistry Chinese Academy of SciencesGuiyang 550081 China Department of Geological Services Ogun State Ministry of Commerce and Industry Oke-Mosan Abeokuta Nigeria University of Chinese Academy of Sciences Beijing 100049China State Key Laboratory of Environmental GeochemistryInstitute of Geochemistry Chinese Academy of SciencesGuiyang 550081 China Department of Science Laboratory Technology Ekiti StateUniversity Ado-Ekiti Ekiti State Nigeria 

出 版 物：《Acta Geochimica》 (地球化学学报（英文）)

年 卷 期：2018年第37卷第4期

页      面：592-613页

核心收录：

学科分类：12[管理学] 1204[管理学-公共管理] 082803[工学-农业生物环境与能源工程] 0709[理学-地质学] 0819[工学-矿业工程] 08[工学] 0828[工学-农业工程] 0708[理学-地球物理学] 09[农学] 0903[农学-农业资源与环境] 120405[管理学-土地资源管理] 

基　　金：the Chinese Academy of Sciences and The World Academy of Sciences for sponsoring this research through the CAS-TWAS President’s Fellowship program 

主　　题：土壤样品 金属污染 沉积 溪流 尼日利亚 采矿 评价 皮革 

摘      要：This study is aimed at determining the level of environmental degradation as well as the concentration of trace elements in soil and stream sediments in order to evaluate the environmental impact of the mining ***-five(25) soils and ten(10) stream sediment samples were collected from the study area. The physicochemical parameters were determined using appropriate instrumentation with the aid of a digital p H meter(Milwaukee meter) to measure the p H and electrical conductivity, total dissolved solids, moisture content and loss on ignition of the soil and stream sediment samples. The p H of the soil sample ranged from(6.10 to 7.19); Electrical conductivity ranged from(21.3 to 279.4 μS/cm), moisture content varied from(0.60% to 7.20%), and the LOI ranged from(2.03% to 18.62%). The results of the analysis showed that the concentrations of the trace elements in the soils and stream sediment samples were slightly higher than the background values. Plots of the trace elements in stream sediment samples show moderate, consistent decrease downstream except at points where there was mine water discharge into the main river. The pollution levels of heavy metals were examined in stream sediment and soil samples using different assessable indices, such as the enrichment factor, which showed significant-moderate enrichment for Cr, Th, Nb, Zn, Pb, Y and Zr and the geoaccumulation index, which showed practically moderate contamination with Cr, Ni and Sr based on regional background reference values. Geo-accumulation index and contamination index for soils and stream sediment revealed uncontaminated to moderate contamination. Likewise,elements with moderate contamination were Cr, Ni and *** Pearson correlation showed that there were significant positive associations among selected metals in soil and stream sediment samples.