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Issue 1, 2009
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Polynuclear aromatic hydrocarbons (PAHs) in global background soils

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The levels and distribution of polynuclear aromatic hydrocarbons (PAHs) were investigated in global background soil samples. Total PAH concentrations (sum of 15 compounds) ranged over 5 orders of magnitude, from <1 to 7,840 (mean 328) ng gāˆ’1 dry weight. The order was generally Europe > North America > Asia > Oceania > Africa > South America. Proximity to long-term emissions sources and locations susceptible to high atmospheric depositional inputs tended to have higher concentrations. A broad positive correlation was obtained between population density and soil PAH concentrations (i.e. source-related factors). However, concentrations were also influenced by the holding capacity of the soils (i.e. sink-related factors) with statistically significant correlations observed between PAHs and soil organic matter (SOM), and black carbon (BC).

Graphical abstract: Polynuclear aromatic hydrocarbons (PAHs) in global background soils

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The article was received on 08 Aug 2008, accepted on 03 Oct 2008 and first published on 22 Oct 2008

Article type: Paper
DOI: 10.1039/B813841A
Citation: J. Environ. Monit., 2009,11, 45-48
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    Polynuclear aromatic hydrocarbons (PAHs) in global background soils

    J. J. Nam, A. J. Sweetman and K. C. Jones, J. Environ. Monit., 2009, 11, 45
    DOI: 10.1039/B813841A

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