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This article in JEQ

  1. Vol. 24 No. 2, p. 271-278
    Received: Nov 19, 1993

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Persistence and Fate of Anthracene and Benzo(a)pyrene in Municipal Sludge Treated Soil

  1. J. D. Goodin * and
  2. M. D. Webber
  1. Wastewater Technology Centre, operated by RockCliffe Research Management, P.O. Box 5068, Burlington, ON, L7R 4L7.



Greenhouse studies using pots and microcosms were conducted to investigate the persistence and fate of nonlabeled and 14C-labeled anthracene (ANT) and benzo(a)pyrene (B(a)P) in sludge treated soil. Results indicated that ANT degraded rapidly (t1/2 ≈ 3 wk) from the experimental systems, but that B(a)P was persistent. Cropping did not affect the persistence of either compound. On completion of the experiments (≤21 wk), ≤ 10% of the ANT added to soil was recovered intact, whereas 78% of the B(a)P added to soil was recovered intact. Most (≥ 85%) of the 14C added to soil as labeled ANT and B(a)P was accounted for. Recoveries of 14CO2 indicated significant mineralization of ANT, but not of B(a)P. Trivial amounts (≤0.2%) of were recovered as volatile organics and in plant materials, but large amounts were recovered from soil. A considerable proportion of the ANT derived 14C in soil was not extracted with acetone/hexane, which indicated that it had been converted to bound residue. A much smaller proportion of B(a)P than of ANT derived 14C in soil was converted to bound residue. No evidence was obtained for uptake of intact ANT or B(a)P by ryegrass (Lolium multiflorum Lam.), soybean [Glycine max (L.) Merr.], and cabbage (Brassica oleracea var. capitata L.).

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