International Journal For Multidisciplinary Research

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Study of the distribution and level of soil contamination by trace metallic elements in the mining areas of Ruashi: application to the Kawama, Luano, and Kalukuluku neighborhoods of the Ruashi municipality, city of Lubumbashi, Democratic Republic of Congo

Author(s) M. Nathan MPIANA KIBWELA, M. Gracien Mukendi Mutombo, M. Joseph Mwamb Kasong, MS. Jocelyne Katoka Binti Ntambwe, M. Marc Kahilu Kabulo, MS. Frida Kalaba Kisanguka, M. Aaron Mpiana Bassomba, M. Inanzala Kitanika M’siri
Country Congo (Democratic)
Abstract This study focused on a physicochemical characterization of the soil at the sites surrounding the mining activity. These three sites are Luano, Kalukuluku and Kawama. To achieve this, we used a methodology that allowed us to determine the pH, humidity, organic matter and trace metal elements. We first started by taking samples in each area at two depths, 20 cm and 40 cm, and finally to study the mobility of Trace metallic elements in the soil. From this we found practically neutral pH values in the Kawama and Kalukuluku area and an acidic pH for the Luano soil. The soil in these three areas is poor in organic matter with an average content of 1.37 %. The site shows a maximum humidity value of 4.09 %, which is explained by the fact that the samples were taken during the dry season towards the end. For this study we analyzed some heavy metals that have a certain toxicity namely: Copper, Cobalt, Zinc, Cadmium, Manganese, Lead and Nickel. This analysis showed a pollution in trace metal elements of the following elements: Copper, Zinc, Cobalt, Cadmium, Manganese and Lead. The calculated pollution indices made it possible to highlight soil pollution with values of 3.99 for Luano, 5.54 for Kalukuluku and 8.15 for Kawama. As the three sites have values greater than 1, these are polluted in Trace metallic elements.
Keywords Trace metal elements, Ruashi mining, Pollution index, Metalloid
Field Autre
Published In Volume 8, Issue 2, March-April 2026
Published On 2026-03-15
DOI https://doi.org/10.36948/ijfmr.2026.v08i02.59578
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E-ISSN 2582-2160
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