Accumulation and phytoavailability of benzo[a]pyrene in an acid sandy soil
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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.
Keywordsacidic sandy soil PAHs phytoavailability polycyclic aromatic hydrocarbons ryegrass
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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).
- Borneff J, Farkazdi G., Glathe H, Kunte H, 1973 The fate of polycyclic aromatic hydrocarbons in experiments using sewage sludge–garbage composts as fertilizers Zentralbl Bakteriol Mikrobiol Hyg [B] 157: 151–164Google Scholar
- Chaineau CH, Morel JL, Oudot J, 1997 Phytotoxicity and plant uptake of fuel oil hydrocarbons J Environ Qual 26: 1478–1483Google Scholar
- Ding K, Luo Y, Liu S, Li Z, 2002a Effect of phenanthrene on microorganism in flooded soil. Soils 34, 229–232, 236Google Scholar
- Ding K, Luo Y, Liu S, Li Z, 2002b A preliminary study of remediation of phenanthrene polluted soil with ryegrass Soils 34: 233–236Google Scholar
- Edwards NT, 1988 Assimilation and metabolism of polycyclic aromatic hydrocarbons by vegetation – an approach to this controversial issue and suggestions for future research. In: Cook M, Dennis AJ, (ed.) Polycyclic Aromatic Hydrocarbons: A Decade of Progress. 10th Int. Symp.Battelle Press, Columbus, OH. pp. 211–229Google Scholar
- Fismes J, Perrin-Ganier C, Emperear-Bissonnet P, Morel JL, 2002 Soil-to-root transfer and translocation of polycyclic aromatic hydrocarbons by vegetables grown on industrial contaminated soils J Environ Qual 31: 1649–1656Google Scholar
- Graf W, 1965 On the natural occurrence and importance of carcinogenic polycyclic aromatic hydrocarbons Med Klin 60: 561Google Scholar
- Graf W, Nowak W, 1966 Promotion of grown in lower and higher plants by carcinogenic polycyclic aromatics Arch Hyg Bakteriol 150: 513–528Google Scholar
- Hseung Y, Li C-K, 1987 Soils of China. Science Press, Beijing, China. pp. 39–66Google Scholar
- Simonich SL, Hites RA, 1995 Organic pollutant accumulation in vegetation Environ Sci Technol 29: 2905–2914Google Scholar
- Sims RC, Overcash MR, 1983 Fate of polynuclear aromatic compounds (PNAs) in soil–plant systems Residue Rev 33: 1–68Google Scholar
- Song Y, Ou Z, Sun T, Yediler A, Lorinci G, Kettrup A, 1995 Analytical method of polycyclic aromatic hydrocarbons (PAHs) in soil and plant samples Chin J Appl Ecol 6: 92–96Google Scholar
- Wang C, Yu S, 1984 Absorption of B[a]P by corn roots and its accumulation in the plants Acta Sci Circumst4: 222–232Google Scholar