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Bioavailability of cobalt and silver nanoparticles to the earthworm Eisenia fetida.
Nanotoxicology. 2012 Mar; 6(2):186-95.N

Abstract

Due to difficulties in tracing engineered nanoparticles (ENPs) in complex media, there are few data on the exposure of soil biota to ENPs. This study used neutron activated cobalt (Co NPs) and silver (Ag NPs) nanoparticles, as well as soluble cobalt and silver salts, to assess the uptake, excretion and biodistribution in the earthworm Eisenia fetida. Concentrations of cobalt in worms after four weeks exposure reached 88% and 69% of the Co ions and Co NPs concentrations in food, respectively, while corresponding values for Ag ions and Ag NPs were 2.3% and 0.4%. Both Ag ions and Ag NPs in earthworms were excreted rapidly, while only 32% of the cobalt accumulated from Co ions and Co NPs were excreted within four months. High accumulation of cobalt was found in blood and in the digestive tract. Metal characterization in the exposure medium was assessed by sequential extraction and ultrafiltration. The Co NPs showed significant dissolution and release of ions, while Ag ions and particularly Ag NPs were more inert.

Authors+Show Affiliations

Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, Aas, Norway. claire.coutris@umb.noNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

21486186

Citation

Coutris, Claire, et al. "Bioavailability of Cobalt and Silver Nanoparticles to the Earthworm Eisenia Fetida." Nanotoxicology, vol. 6, no. 2, 2012, pp. 186-95.
Coutris C, Hertel-Aas T, Lapied E, et al. Bioavailability of cobalt and silver nanoparticles to the earthworm Eisenia fetida. Nanotoxicology. 2012;6(2):186-95.
Coutris, C., Hertel-Aas, T., Lapied, E., Joner, E. J., & Oughton, D. H. (2012). Bioavailability of cobalt and silver nanoparticles to the earthworm Eisenia fetida. Nanotoxicology, 6(2), 186-95. https://doi.org/10.3109/17435390.2011.569094
Coutris C, et al. Bioavailability of Cobalt and Silver Nanoparticles to the Earthworm Eisenia Fetida. Nanotoxicology. 2012;6(2):186-95. PubMed PMID: 21486186.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Bioavailability of cobalt and silver nanoparticles to the earthworm Eisenia fetida. AU - Coutris,Claire, AU - Hertel-Aas,Turid, AU - Lapied,Emmanuel, AU - Joner,Erik J, AU - Oughton,Deborah H, Y1 - 2011/04/13/ PY - 2011/4/14/entrez PY - 2011/4/14/pubmed PY - 2012/8/15/medline SP - 186 EP - 95 JF - Nanotoxicology JO - Nanotoxicology VL - 6 IS - 2 N2 - Due to difficulties in tracing engineered nanoparticles (ENPs) in complex media, there are few data on the exposure of soil biota to ENPs. This study used neutron activated cobalt (Co NPs) and silver (Ag NPs) nanoparticles, as well as soluble cobalt and silver salts, to assess the uptake, excretion and biodistribution in the earthworm Eisenia fetida. Concentrations of cobalt in worms after four weeks exposure reached 88% and 69% of the Co ions and Co NPs concentrations in food, respectively, while corresponding values for Ag ions and Ag NPs were 2.3% and 0.4%. Both Ag ions and Ag NPs in earthworms were excreted rapidly, while only 32% of the cobalt accumulated from Co ions and Co NPs were excreted within four months. High accumulation of cobalt was found in blood and in the digestive tract. Metal characterization in the exposure medium was assessed by sequential extraction and ultrafiltration. The Co NPs showed significant dissolution and release of ions, while Ag ions and particularly Ag NPs were more inert. SN - 1743-5404 UR - https://www.unboundmedicine.com/medline/citation/21486186/Bioavailability_of_cobalt_and_silver_nanoparticles_to_the_earthworm_Eisenia_fetida_ L2 - https://www.tandfonline.com/doi/full/10.3109/17435390.2011.569094 DB - PRIME DP - Unbound Medicine ER -