Transfer of Cd, Cu, Ni, Pb, and Zn in a soil-plant-invertebrate food chain: a microcosm study.

Abstract : The transfer of Cd, Cu, Ni, Pb, and Zn was evaluated in a soil-plant (lettuce, Lactuca sativa)-invertebrate (snail, Helix aspersa) food chain during a microcosm experiment. Two agricultural soils, polluted and unpolluted, were studied. Lettuce was cultivated for eight weeks before introduction of snails into the microcosms (M-snails). In a parallel experiment, snails were exposed to lettuce only (i.e., without soil) in simpler exposure devices called containers (C-snails). Snail exposure duration was eight weeks for both M- and C-snails. No effects on snail survival were found. Both M- and C-snails exposed to polluted soil showed a growth reduction, but only after two weeks of exposure. Time-dependent accumulation in M-snails exposed to the polluted environment showed a regular increase of Cd and Zn concentrations over time and a rapid increase of Pb concentrations within the first two weeks, which then remained stable. Copper and Ni concentrations did not increase during any of the experiments. Concentrations in M- and C-snails were compared to estimate the relative contribution of soil and plant to the total bioaccumulation. The results suggest that the soil contribution may be higher than 80% for Pb, from 30 to 60% for Zn, and from 2 to 40% for Cd.
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Journal articles
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https://hal.archives-ouvertes.fr/hal-00374630
Contributor : Annette de Vaufleury <>
Submitted on : Thursday, April 9, 2009 - 10:47:47 AM
Last modification on : Friday, February 28, 2020 - 2:58:05 PM

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  • HAL Id : hal-00374630, version 1
  • PUBMED : 16566167

Citation

Renaud Scheifler, Annette De Vaufleury, Michaël Coeurdassier, Nadia Crini, Pierre-Marie Badot. Transfer of Cd, Cu, Ni, Pb, and Zn in a soil-plant-invertebrate food chain: a microcosm study.. Environmental Toxicology and Chemistry, Wiley, 2006, 25 (3), pp.815-22. ⟨hal-00374630⟩

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