Assessment of the levels of heavy metal pollution in roadside soils of Termiz – Taskent, Uzbekistan

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dc.authorid0000-0002-0736-0979
dc.authorid0000-0002-3296-1549
dc.authorid0009-0008-5550-6216
dc.authorid0000-0003-3908-7070
dc.authorid0000-0001-9748-1303
dc.contributor.authorKholikulov, Shodi Turdukulovich
dc.contributor.authorErdem, Halil
dc.contributor.authorBobobekov, Isomiddin Nuriddinovich
dc.contributor.authorDemir, Saniye
dc.contributor.authorGence, Cabir Çağrı
dc.date.accessioned2025-07-16T11:11:21Z
dc.date.available2025-07-16T11:11:21Z
dc.date.issued2025
dc.departmentTeknik Bilimler Meslek Yüksekokulu
dc.description.abstractThis study investigates the contamination of roadside soils by heavy metals (Pb, Zn, Ni, and Mo) along the Tashkent- Termiz International M-39 highway, utilizing indices such as the enrichment factor (EF), geo-accumulation index (Igeo), and pollution load index (PLI). Soil samples collected at 21 distances (5–1000 m) indicate that metal concentrations decrease with distance from the road, with rapid reductions observed within the 5–100 m range. Pb levels decline from 24 mg kg-1 at 5 m to 1.4 mg kg-1 at 1000 m, while Zn reduces from 26.3 mg kg-1 to 2.1 mg kg-1. Ni and Mo follow similar trends, but Mo exhibits lower mobility. Pb, Zn, and Ni stand out as indicators of anthropogenic pollution, with high correlation values between their DTPA-extractable and total concentrations (R2: Pb = 0.953, Zn = 0.930, Ni = 0.932). The Igeo values reveal moderate to high contamination near the road, particularly for Pb and Zn. The EF values for Mo (2.06) suggest moderate enrichment due to anthropogenic sources, such as traffic emissions, while Pb (0.76), Zn (0.89), and Ni (0.93) show minimal enrichment. PLI values of 4.24, 4.03, 3.63, and 4.87 for Pb, Zn, Ni, and Mo, respectively, classify the area as “highly polluted” for most metals. These findings highlight the significant anthropogenic contribution to heavy metal accumulation, driven by vehicular emissions, tire wear, and industrial activities. The contamination poses risks to soil health, biodiversity, and human safety through bioaccumulation in the food chain. Sustainable environmental management and pollution mitigation strategies are urgently required to address these concerns and safeguard agricultural productivity and ecosystem functions.
dc.identifier.doi10.12911/22998993/199700
dc.identifier.endpage295
dc.identifier.issn22998993
dc.identifier.issue3
dc.identifier.scopus85216961656
dc.identifier.startpage283
dc.identifier.urihttps://dx.doi.org/10.12911/22998993/199700
dc.identifier.urihttps://hdl.handle.net/20.500.12451/13322
dc.identifier.volume26
dc.identifier.wosWOS:001408455600026
dc.identifier.wosqualityQ4
dc.indekslendigikaynakScopus
dc.indekslendigikaynakWeb of Science
dc.institutionauthorGence, Cabir Çağrı
dc.institutionauthorid0000-0001-9748-1303
dc.language.isoen
dc.publisherPolskie Towarzystwo Inzynierii Ekologicznej (PTIE)
dc.relation.ispartofJournal of Ecological Engineering
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/openAccess
dc.subjectContamination
dc.subjectHeavy Metal
dc.subjectPollution
dc.subjectRoad
dc.subjectSoil
dc.subjectUzbekistan
dc.titleAssessment of the levels of heavy metal pollution in roadside soils of Termiz – Taskent, Uzbekistan
dc.typeArticle

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