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Dissipation of polycyclic aromatic hydrocarbons (PAHs) in the rhizosphere: Synthesis through meta-analysis

Authors :
Ma, Bin
He, Yan
Chen, Huai-hai
Xu, Jian-ming
Rengel, Zed
Source :
Environmental Pollution; Mar2010, Vol. 158 Issue 3, p855-861, 7p
Publication Year :
2010

Abstract

Polycyclic aromatic hydrocarbons (PAHs) are widespread and persistent organic pollutants with high carcinogenic effect and toxicity; their behavior and fate in the soil–plant system have been widely investigated. In the present paper, meta-analysis was used to explore the interaction between plant growth and dissipation of PAHs in soil based on the large body of published literature. Plants have a promoting effect on PAH dissipation in soils. There was no difference in PAH dissipation between soils contaminated with single and mixed PAHs. However, plants had a more obvious effect on PAH dissipation in freshly-spiked soils than in long-term field-polluted soils. Additionally, a positive effect of the number of microbial populations capable of degrading PAHs was observed in the rhizosphere compared with the bulk soil. Our meta-analysis established the importance of the rhizosphere effect on PAH dissipation in variety of the soil–plant systems. [Copyright &y& Elsevier]

Details

Language :
English
ISSN :
02697491
Volume :
158
Issue :
3
Database :
Supplemental Index
Journal :
Environmental Pollution
Publication Type :
Academic Journal
Accession number :
47611589
Full Text :
https://doi.org/10.1016/j.envpol.2009.09.024