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.
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The authors are grateful for grant-aided support from the National Science Foundation of China (Nos. 40031010, 40432005), and from the Major State Basic Research and Development Program of the People’s Republic of China (2002CB41 080910).
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Xing, W., Luo, Y., Wu, L. et al. Accumulation and phytoavailability of benzo[a]pyrene in an acid sandy soil. Environ Geochem Health 28, 153–158 (2006). https://doi.org/10.1007/s10653-005-9026-9
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DOI: https://doi.org/10.1007/s10653-005-9026-9