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Effect of leaching and aging on the bioavailability of lead to the springtail Folsomia candida

Research output: Contribution to journalA1: Web of Science-articleResearchpeer-review

Authors

  • Koen Lock
  • N Waegeneers
  • E Smolders
  • P Criel
  • Hilde Van Eeckhout
  • And 1 others
  • C. R Janssen

Details

Original languageEnglish
JournalEnvironmental Toxicology and Chemistry
Volume25
Issue number8
Pages (from-to)2006-2010
Number of pages5
Publication statusPublished - 2006

Abstract

Because it is unclear if leaching can account for differences in metal bioavailability observed between metal-spiked soils and historically contaminated field soils, we simultaneously assessed Pb toxicity to the springtail Folsomia candida in three transects of Pb-contaminated soils and in leached and unleached soils spiked at similar total Pb concentrations. Total Pb concentrations of 3,877 mg/kg dry weight and higher always caused significant effects on F. candida reproduction in the spiked soils. In the transects, only the soil with the highest Pb concentration of 14,436 mg/kg dry weight significantly affected reproduction. When expressed as pore-water concentrations, reproduction was never significantly affected at Pb concentrations of 0.539 mg/L, whereas reproduction was always significantly affected at Pb concentrations of 0.678 mg/L and higher, independent of the soil treatment. These results indicate that pore-water Pb concentrations can explain, at least in part, the observed differences in the toxicity data expressed as total Pb concentrations. Leaching after the spiking procedure only caused small differences in Pb toxicity and, therefore, cannot account for toxicity differences between laboratory-spiked soils and historically contaminated field soils.
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Documents

Documents

  • Lock_etal_2006_EnvironToxicolChem

    Final published version, 69 KB, PDF-document

DOI

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