Accumulation and phytoavailability of benzo[a]pyrene in an acid sandy soil

Environmental Geochemistry and Health
Weiqin XingPeter Christie

Abstract

Effects of benzo[a]pyrene (B[a]P) on ryegrass (Lolium perenne L.) growth, plant accumulation and dissipiation of B[a]P in a red sandy soil (Hapli-Udic Argosol) were studied in a pot experiment. The plants were grown for 61 days in soil spiked with B[a]P at 0, 12.5, 25 and 50 mg kg(-1). Control pots without plants were also set up. Soil extractable B[a]P, plant shoot and root biomass, and concentrations of B[a]P in plant shoots and roots were determined. Ryegrass biomass was increased by addition of B[a]P and root B[a]P concentrations were significantly correlated with B[a]P application rate, but no such correlation was found for shoot B[a]P concentrations. This indicates that B[a]P enhanced the growth of the ryegrass. The extractable B[a]P concentration in the planted soil was significantly lower than that in the unplanted control soil at the rate of 50 mg B[a]P kg(-1). This indicates that ryegrass may help to dissipate B[a]P in soil at concentrations over 50 mg kg(-1) soil although the mechanism for this is not understood.

References

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Citations

Jul 1, 2008·Journal of Hazardous Materials·Peijun LiXianzhe Xiong
Jul 8, 2015·Bulletin of Environmental Contamination and Toxicology·Khanitta SomtrakoonHung Lee
Sep 4, 2013·Journal of Environmental Science and Health. Part. B, Pesticides, Food Contaminants, and Agricultural Wastes·Artur CiemniakKamila Mocek

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