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Polycyclic Aromatic Hydrocarbons (PAHs) in Soil and Sediment from Industrial, Residential and Agricultural Areas in Central South Africa: An Initial Assessment
School of Environmental Sciences and Development (Zoology), North-West University, Potchefstroom, South Africa.
School of Environmental Sciences and Development (Zoology), North-West University, Potchefstroom, South Africa.
School of Environmental Sciences and Development (Zoology), North-West University, Potchefstroom, South Africa.
Norwegian Institute for Air Research.ORCID iD: 0000-0002-5972-1852
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2011 (English)In: Soil and Sediment Contamination, ISSN 1532-0383, Vol. 20, no 2, 188-204 p.Article in journal (Refereed) Published
Abstract [en]

Polycyclic aromatic hydrocarbons (PAHs) are of global concern due to their ubiquitous presence, toxicity, and carcinogenicity. No data on PAHs in soils from South Africa have been published, even though it has the largest economy and industrial base in Africa. During this initial assessment, the levels of PAHs were determined in soils and sediments collected from central South Africa, specifically targeting industrial, residential, and agricultural areas. Analysis was performed by gas chromatography/mass spectrometry (GC/MS). The total concentration of PAHs (Σt-PAH) ranged between 44 and 39,000 ng/g, dw and the concentration of carcinogenic PAHs (Σc-PAH) ranged between 19 and 19,000 ng/g, dw. Pyrogenic processes were the most likely sources, with minimal petrogenic contributions. PAH levels were in the same range as levels reported from other countries, and the majority of the sites did not exceed Canadian environmental quality guidelines. Based on assumptions for dermal contact and ingestion of PAH-contaminated soil, we provisionally calculated only a small increase in cancer risk, but additional PAH inhalation could add considerably to this risk. Our data indicates a need for more analysis in industrial and residential areas, and should include air.

Place, publisher, year, edition, pages
Taylor and Francis , 2011. Vol. 20, no 2, 188-204 p.
Keyword [en]
Vaal River, Orange River, cancer risk, pyrogenic origin, petrogenic origin
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-66342DOI: 10.1080/15320383.2011.546443ISI: 000288275600005OAI: oai:DiVA.org:liu-66342DiVA: diva2:404512
Available from: 2011-03-24 Created: 2011-03-11 Last updated: 2015-05-28Bibliographically approved

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Kylin, Henrik

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