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Uptake kinetics of metals by the earthworm Eisenia fetida exposed to field-contaminated soils.
Environ Pollut. 2009 Oct; 157(10):2622-8.EP

Abstract

It is well known that earthworms can accumulate metals. However, most accumulation studies focus on Cd-, Cu-, Pb- or Zn-amended soils, additionally few studies consider accumulation kinetics. Here we model the accumulation kinetics of 18 elements by Eisenia fetida, exposed to 8 metal-contaminated and 2 uncontaminated soils. Tissue metal concentration was determined after 3, 7, 14, 21, 28 and 42 days. Metal elimination rate was important in determining time to reach steady-state tissue metal concentration. Uptake flux to elimination rate ratios showed less variation and lower values for essential than for non-essential metals. In theory kinetic rate constants are dependent only on species and metal. Therefore it should be possible to predict steady-state tissue metal concentrations on the basis of very few measurements using the rate constants. However, our experiments show that it is difficult to extrapolate the accumulation kinetic constants derived using one soil to another.

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Authors+Show Affiliations

Nahmani J
Laboratoire Interactions Ecotoxicité, Biodiversité, Ecosystèmes, CNRS UMR 7146, Université Paul Verlaine-Metz, Rue du Général Delestraint, 57070 Metz, France. nahmani@univ-metz.fr
Hodson ME
No affiliation info available
Devin S
No affiliation info available
Vijver MG
No affiliation info available

MeSH

AnimalsEnvironmental PollutionKineticsMetals, HeavyOligochaetaSoilSoil Pollutants

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

19482399

Citation

Nahmani, Johanne, et al. "Uptake Kinetics of Metals By the Earthworm Eisenia Fetida Exposed to Field-contaminated Soils." Environmental Pollution (Barking, Essex : 1987), vol. 157, no. 10, 2009, pp. 2622-8.
Nahmani J, Hodson ME, Devin S, et al. Uptake kinetics of metals by the earthworm Eisenia fetida exposed to field-contaminated soils. Environ Pollut. 2009;157(10):2622-8.
Nahmani, J., Hodson, M. E., Devin, S., & Vijver, M. G. (2009). Uptake kinetics of metals by the earthworm Eisenia fetida exposed to field-contaminated soils. Environmental Pollution (Barking, Essex : 1987), 157(10), 2622-8. https://doi.org/10.1016/j.envpol.2009.05.002
Nahmani J, et al. Uptake Kinetics of Metals By the Earthworm Eisenia Fetida Exposed to Field-contaminated Soils. Environ Pollut. 2009;157(10):2622-8. PubMed PMID: 19482399.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Uptake kinetics of metals by the earthworm Eisenia fetida exposed to field-contaminated soils. AU - Nahmani,Johanne, AU - Hodson,Mark E, AU - Devin,Simon, AU - Vijver,Martina G, Y1 - 2009/05/30/ PY - 2008/09/30/received PY - 2009/04/22/revised PY - 2009/05/03/accepted PY - 2009/6/2/entrez PY - 2009/6/2/pubmed PY - 2011/12/15/medline SP - 2622 EP - 8 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ Pollut VL - 157 IS - 10 N2 - It is well known that earthworms can accumulate metals. However, most accumulation studies focus on Cd-, Cu-, Pb- or Zn-amended soils, additionally few studies consider accumulation kinetics. Here we model the accumulation kinetics of 18 elements by Eisenia fetida, exposed to 8 metal-contaminated and 2 uncontaminated soils. Tissue metal concentration was determined after 3, 7, 14, 21, 28 and 42 days. Metal elimination rate was important in determining time to reach steady-state tissue metal concentration. Uptake flux to elimination rate ratios showed less variation and lower values for essential than for non-essential metals. In theory kinetic rate constants are dependent only on species and metal. Therefore it should be possible to predict steady-state tissue metal concentrations on the basis of very few measurements using the rate constants. However, our experiments show that it is difficult to extrapolate the accumulation kinetic constants derived using one soil to another. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/19482399/Uptake_kinetics_of_metals_by_the_earthworm_Eisenia_fetida_exposed_to_field_contaminated_soils_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(09)00228-0 DB - PRIME DP - Unbound Medicine ER -