Li, Jun, Hodson, Mark Edward orcid.org/0000-0002-8166-1526, Brown, Colin David orcid.org/0000-0001-7291-0407 et al. (3 more authors) (2024) A User-Friendly Kinetic Model Incorporating Regression Models for Estimating Pesticide Accumulation in Diverse Earthworm Species Across Varied Soils. Environmental Science and Technology. pp. 14555-14564. ISSN 1520-5851
Abstract
Existing models for estimating pesticide bioconcentration in earthworms exhibit limited applicability across different chemicals, soils and species which restricts their potential as an alternative, intermediate tier for risk assessment. We used experimental data from uptake and elimination studies using three earthworm species (Lumbricus terrestris, Aporrectodea caliginosa, Eisenia fetida), five pesticides (log Kow 1.69−6.63) and five soils (organic matter content = 0.972−39.9 wt%) to produce a first-order kinetic accumulation model. Model applicability was evaluated against a dataset of 402 internal earthworm concentrations reported from the literature including chemical and soil properties outside the data range used to produce the model. Our models accurately predict body load using either porewater or bulk soil concentrations, with at least 93.5% and 84.3% of body load predictions within a factor of 10 and 5 of corresponding observed values, respectively. This suggests that there is no need to distinguish between porewater and soil exposure routes or to consider different uptake and elimination pathways when predicting earthworm bioconcentration. Our new model not only outperformed existing models in characterising earthworm exposure to pesticides in soil, but it could also be integrated with models that account for earthworm movement and fluctuating soil pesticide concentrations due to degradation and transport.
Metadata
Item Type: | Article |
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Authors/Creators: |
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Copyright, Publisher and Additional Information: | © 2024 The Authors. |
Keywords: | uptake,elimination,dermal,gut,lipid,porewater,Risk assesment |
Dates: |
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Institution: | The University of York |
Academic Units: | The University of York > Faculty of Sciences (York) > Environment and Geography (York) |
Depositing User: | Pure (York) |
Date Deposited: | 12 Sep 2024 04:24 |
Last Modified: | 23 Oct 2024 00:21 |
Published Version: | https://doi.org/10.1021/acs.est.4c06642 |
Status: | Published |
Refereed: | Yes |
Identification Number: | 10.1021/acs.est.4c06642 |
Sustainable Development Goals: | |
Open Archives Initiative ID (OAI ID): | oai:eprints.whiterose.ac.uk:217135 |
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Description: A User-Friendly Kinetic Model Incorporating Regression Models forEstimating Pesticide Accumulation in Diverse Earthworm SpeciesAcross Varied Soils
Licence: CC-BY 2.5