Effects of polycyclic aromatic hydrocarbons on germination and subsequent growth of grasses and legumes in freshly contaminated soil and soil with aged PAHs residues

Smith, M.J. , Flowers, T.H., Duncan, H.J. and Alder, J. (2006) Effects of polycyclic aromatic hydrocarbons on germination and subsequent growth of grasses and legumes in freshly contaminated soil and soil with aged PAHs residues. Environmental Pollution, 141(3), pp. 519-525. (doi:10.1016/j.envpol.2005.08.061)

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Abstract

The relevance of germination trials for screening plants that may have potential for use in the phytoremediation of PAH contaminated land was evaluated. The germination and subsequent growth of 7 grass and legume species were evaluated in soil spiked with a pure PAH mixture or coal tar and soil from a former coking plant heavily contaminated with aged PAHs. None of these treatments adversely affected germination of the plants. However, apart from Lolium perenne all species exhibited reduced growth in the coking plant soil after 12 weeks growth when compared to the untreated soil. In the coal tar spiked soil 4 out of the 7 species showed reduced growth, as did 3 out of the 7 in the soil spiked with a mixture of 7 PAHs. Therefore, germination studies alone would not predict the success of subsequent growth of the species tested in the ranges of soil PAH levels studied.

Item Type:Articles
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Smith, Dr Margaret and Flowers, Dr Hugh
Authors: Smith, M.J., Flowers, T.H., Duncan, H.J., and Alder, J.
College/School:College of Science and Engineering > School of Chemistry
College of Arts > School of Culture and Creative Arts > History of Art
Journal Name:Environmental Pollution
Publisher:Elsevier
ISSN:0269-7491
ISSN (Online):1873-6424

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