Abstract
The aim of this study was to determine the bioavailability of metals in field soils contaminated with chromated copper arsenate (CCA) mixtures. The uptake and elimination kinetics of chromium, copper, and arsenic were assessed in the earthworm Eisenia andrei exposed to soils from a gradient of CCA wood preservative contamination near Hartola, Finland. In soils contaminated with 1480-1590 mg Cr/kg dry soil, 642-791 mg Cu/kg dry soil, and 850-2810 mg Ag/kg dry soil, uptake and elimination kinetics patterns were similar for Cr and Cu. Both metals were rapidly taken up and rapidly excreted by Eisenia andrei with equilibrium reached within 1 day. The metalloid As, however, showed very slow uptake and elimination in the earthworms and body concentrations did not reach equilibrium within 21 days. Bioaccumulation factors (BAF) were low for Cu and Cr (< 0.1), but high for As at 0.54-1.8. The potential risk of CCA exposure for the terrestrial ecosystem therefore is mainly due to As.
Original language | English |
---|---|
Pages (from-to) | 15095-15104 |
Number of pages | 10 |
Journal | Environmental science and pollution research international |
Volume | 26 |
Issue number | 15 |
Early online date | 28 Mar 2019 |
DOIs | |
Publication status | Published - 1 May 2019 |
Funding
The Onni and Hilja Tuovinen Foundation, Maj and Thor Nessling foundation, the Lahti fund of University of Helsinki, and Lahti Region Development LADEC Ltd. have funded this project. Open access funding provided by University of Helsinki including Helsinki University Central Hospital. We thank Rudo Verweij, Vrije Universiteit, Amsterdam, for technical assistance and Virve Haili, University of Helsinki, Lahti, for her assistance during the experiments.
Funders | Funder number |
---|---|
Hilja Tuovinen Foundation | |
Lahti fund of University of Helsinki | |
Maj and Thor Nessling foundation | |
University of Helsinki including Helsinki University Central Hospital |
Keywords
- Bioaccumulation
- Bioavailability
- CCA-contaminated soil
- Eisenia andrei
- Metals and metalloids
- Uptake and elimination kinetics