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Polycyclic aromatic hydrocarbons (PAHs) in soils of an industrial area in semi-arid Uzbekistan: spatial distribution, relationship with trace metals and risk assessment

Bandowe, Benjamin A. M.; Shukurov, Nosir; Leimer, Sophia 1; Kersten, Michael; Steinberger, Yosef; Wilcke, Wolfgang 1
1 Institut für Geographie und Geoökologie (IFGG), Karlsruher Institut für Technologie (KIT)


The concentrations, composition patterns, transport and fate of PAHs in semi-arid and arid soils such as in Central Asia are not well known. Such knowledge is required to manage the risk posed by these toxic chemicals to humans and ecosystems in these regions. To fill this knowledge gap, we determined the concentrations of 21 parent PAHs, 4,5-methylenephenanthrene, 6 alkylated PAHs, and biphenyl in soils from 11 sampling locations (0–10, 10–20 cm soil depths) along a 20-km transect downwind from the Almalyk metal mining and metallurgical industrial complex (Almalyk MMC), Uzbekistan. The concentrations of Σ29 PAHs and Σ16 US-EPA PAHs were 41–2670 ng g$^{-1}$ and 29–1940 ng g$^{-1}$, respectively. The highest concentration of Σ29 PAHs occurred in the immediate vicinity of the copper smelting factory of the Almalyk MMC. The concentrations in topsoil decreased substantially to a value of ≤ 200 ng g$^{-1}$ (considered as background concentration) at ≥ 2 km away from the factory. Low molecular weight PAHs dominated the PAH mixtures at less contaminated sites and high molecular weight PAHs at the most contaminated site. The concentration of Σ16 US-EPA PAHs did not exceed the precautionary values set by the soil quality guidelines of, e.g., Switzerland and Germany. ... mehr

Verlagsausgabe §
DOI: 10.5445/IR/1000133882
Veröffentlicht am 14.06.2021
DOI: 10.1007/s10653-021-00974-3
Zitationen: 5
Web of Science
Zitationen: 2
Zitationen: 6
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Geographie und Geoökologie (IFGG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 0269-4042
KITopen-ID: 1000133882
Erschienen in Environmental Geochemistry and Health
Heft 43
Seiten 4847–4861
Vorab online veröffentlicht am 26.05.2021
Nachgewiesen in Dimensions
Web of Science
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