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The assessment of heavy metal pollution in river sands of Jalingo,Nigeria using magnetic proxy parameters,pollution,and ecotoxicological indices

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Acta Geochimica 2022年第6期41卷 1083-1103页

作者： Maxwell O.Kanu Augustine A.Abong Department of Physics Faculty of ScienceTaraba State UniversityP.M.B.1167JalingoTaraba StateNigeria Department of Physics Faculty of ScienceCross River University of TechnologyP.M.B.1123CalabarNigeria

The measurement of environmental magnetic properties and metal contents of sands from Nukkai(NKR),Mayo-Gwoi(RMYG)and Lamurde(LR)rivers located in Jalingo,Nigeria are *** seek to determine the extent of anthropogenic impact on the river sands using magnetic-proxy-parameters,pollution and ecotoxicological indices and multivariate *** of magnetic susceptibilityχ,frequency-dependentsusceptibilityχfd%,anhystericremanent magnetization,isothernal remanent magnetization and X-ray fluorescence were *** average values of theχ(in×10^(-8)m^(3)kg^(-1))were 24.53,12.76 and 39.27 for NKR,RMYG and LR sites respectively,implying that the magnetic minerals in the sands were mostly *** meanχfd%value of 2.64%,4.85%and 3.53%for NKR,RMYG and LR respectively suggest that the study area was dominated by multi-domain magnetic grain *** value of the S-ratio is~1 in all river samples,suggesting that low coercivity magnetic minerals(e.g.,magnetite)dominated the *** mean concentrations of Ti,Zr,Sn,Ba and Pb were higher than the background values in the studied *** the estimated pollution indices puts the level of pollution of the river sands between low and moderate pollution with Sn,Ba and Pb as the elements of *** sources of metal contents such as fertilizers,pesticides,waste dumps and vehicular sources *** *** positive correlations between magnetic parameters(particularly,SIRM)and some heavy metals and pollution/ecotoxicological indices were obtained,showing that magnetic methods could be used as a geochemical proxy for pollution assessment.

关键词： Magnetic susceptibility ecotoxicological risk index Pollution index Heavy metals pollution River

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