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Heavy Metal Dispersion.in.Stream Sedimen.s in.River Iyiuden., Abakaliki South-Eastern.n.geria: Source, Distribution.Pattern. an. Con.amin.tion.Assessmen.

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Journ.l of Geoscien.e an. En.iron.en. Protection 2022年第7期10卷 48-69页

作者： Emman.el U. n.azue Erepamo J. Omietimi En.ye Mien.e Osayamen.J. Imarhiagbe Olumide A. Adeosun.paulinus n. nnabo Departmen. of Geology Ebonyi State University Abakaliki Nigeria Departmen. of Geology University of Pretoria Pretoria South Africa Bayelsa state Polytechn.c Aleibiri Ekeremor Nigeria Division.of Earth Scien.es an. Geography RWTH Aachen University Aachen Germany Departmen. of Geology University of Ibadan Ibadan Nigeria

River Iyiuden. is a vital distributary resource in.Abakaliki, southeastern.n.geria an. con.eys an.abun.an. amoun. of sedimen.s to provin.ial an. residual ecosystems. Although the importan.e of the river can.ot be overemphasized, the geochemistry of its stream sedimen.s is less in.estigated. Twen.y (20) stream sedimen. samples were taken.at the cen.re of the river chan.els to represen. the en.ire drain.ge area well an. avoid collapsed ban. materials. The stream sedimen. samples were used to determin. the dispersion. con.amin.tion.status an. sources of heavy metal con.en.ration.. Total elemen.al digestion.accompan.ed this with the use of aqua regia, an.admixture of Hydrochloric acid (HCl) an. n.tric acid (Hn.3) in.the ratio of 3:1 usin. the atomic absorption.spectrometer (AAS). The heavy metal con.en.ration.levels in.River Iyiuden. were low compared with sedimen.s from Imo River, Gulf of Californ.a, Upper con.in.n.al crust, Average shale an. surface horizon., excludin. Cd, which showed high con.en.ration.levels than.the other referen.e studies. The results delin.ated a wide con.rast in.the con.en.ration.levels of the heavy metals, with the mean.con.en.s in.the order Zn.> Cu > Pb > Cd > n. > As. The pollution.evaluation.utilizin. the Effect ran.e low (ERL), Effect ran.e median.(ERM), sin.le pollution.in.ex, an. geo-accumulation.in.ex revealed Cd con.amin.tion. This study in.icates that the heavy metals were sourced from the n.tural geological backgroun. of the river basin.an. possibly from agricultural run.ff an. atmospheric pollutan.s.

关键词： Ben.e Trough Heavy Metals Con.amin.tion Stream Sedimen.s Sin.le Pollution.In.ex Correlation.Matrix

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Impact of Past Min.n. Activities on.Water Resources Aroun. Active an. Aban.on.d Min.s an. Quarries in.Ebon.i State,South-Eastern.n.geria-A Min. Review

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Hydro Scien.e & Marin. En.in.erin. 2020年第2期2卷 32-38页

作者： Moses Oghen.n.oreme Eyan.ware nnabo paulinus n.an.wo Christopher Ogwah Departmen. of Geology Ebonyi State UniversityAbakaliki Ebonyi StateNigeria

This paper presen.s a review on.previous activities of min.n. on.water resources aroun. active an. aban.on.d min.s/quarries across Ebon.i State,South-Eastern.*** high deman. for water in.reases due to population.growth an. rapid developmen. across the state,it is of upmost importan.e to periodically review water quality an. also mon.tor water ***,less in.ormation.is available on.evaluation.of impact on.min.n. activities on.water *** the purpose of this research,related articles were down.oaded from Google,published article on.effect of min.n. on.water resources was down.oad an. thoroughly studied to evaluate effect of min.n. on.water resources of the study *** revealed that past min.n. activities has lead to chain. of complex chemical reaction. that has altered the quality of water resources.

关键词： Groun.water Surface water Southern.Ben.e Trough Acid min. drain n.geria

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