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© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.

Abstract

Cobalt (Co) nanoparticles (NPs) may be diffusely dispersed into natural ecosystems from various anthropogenic sources such as traffic settings and eventually end up in aquatic systems. As environmentally dispersed Co NPs may be transferred through an aquatic food web, this study investigated this transfer from algae (Scendesmus sp.) to zooplankton (Daphnia magna) to fish (Crucian carp, Carassius carassius). Effects of interactions between naturally excreted biomolecules from D. magna and Co NPs were investigated from an environmental fate perspective. ATR-FTIR measurements showed the adsorption of both algae constituents and excreted biomolecules onto the Co NPs. Less than 5% of the Co NPs formed heteroagglomerates with algae, partly an effect of both agglomeration and settling of the Co NPs. The presence of excreted biomolecules in the solution did not affect the extent of heteroagglomeration. Despite the low extent of heteroagglomeration between Co NPs and algae, the Co NPs were transferred to the next trophic level (D. magna). The Co uptake in D. magna was 300 times larger than the control samples (without Co NP), which were not influenced by the addition of excreted biomolecules to the solution. Significant uptake of Co was observed in the intestine of the fish feeding on D. magna containing Co NPs. No bioaccumulation of Co was observed in the fish. Moreover, 10–20% of the transferred Co NP mass was dissolved after 24 h in the simulated gut solution of the zooplankton (pH 7), and 50–60% was dissolved in the simulated gut solution of the fish (pH 4). The results elucidate that Co NPs gain different properties upon trophic transfer in the food web. Risk assessments should hence be conducted on transformed and weathered NPs rather than on pristine particles.

Details

Title
Transfer of Cobalt Nanoparticles in a Simplified Food Web: From Algae to Zooplankton to Fish
Author
Nanxuan Mei 1 ; Hedberg, Jonas 1   VIAFID ORCID Logo  ; Ekvall, Mikael T 2 ; Kelpsiene, Egle 3   VIAFID ORCID Logo  ; Lars-Anders Hansson 4   VIAFID ORCID Logo  ; Cedervall, Tommy 3 ; Blomberg, Eva 5   VIAFID ORCID Logo  ; Odnevall, Inger 6   VIAFID ORCID Logo 

 Department of Chemistry, Division Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Drottning Kristinas Väg 51, SE-100 44 Stockholm, Sweden; [email protected] (N.M.); [email protected] (J.H.) 
 Aquatic Ecology, Department of Biology, Ecology Building, Lund University, SE-223 62 Lund, Sweden; [email protected] (M.T.E.); [email protected] (L.-A.H.); Center for Molecular Protein Science, Department of Biochemistry and Structural Biology, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden; [email protected] (E.K.); [email protected] (T.C.) 
 Center for Molecular Protein Science, Department of Biochemistry and Structural Biology, Lund University, P.O. Box 118, SE-221 00 Lund, Sweden; [email protected] (E.K.); [email protected] (T.C.) 
 Aquatic Ecology, Department of Biology, Ecology Building, Lund University, SE-223 62 Lund, Sweden; [email protected] (M.T.E.); [email protected] (L.-A.H.) 
 Department of Chemistry, Division Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Drottning Kristinas Väg 51, SE-100 44 Stockholm, Sweden; [email protected] (N.M.); [email protected] (J.H.); Division Bioeconomy and Health, Material and Surface Design, RISE Research Institutes of Sweden, SE-114 86 Stockholm, Sweden 
 Department of Chemistry, Division Surface and Corrosion Science, School of Engineering Sciences in Chemistry, Biotechnology and Health, KTH Royal Institute of Technology, Drottning Kristinas Väg 51, SE-100 44 Stockholm, Sweden; [email protected] (N.M.); [email protected] (J.H.); AIMES—Center for the Advancement of Integrated Medical and Engineering Sciences at Karolinska Institutet and KTH Royal Institute of Technology, SE-100 44 Stockholm, Sweden; Department of Neuroscience, Karolinska Institutet, SE-171 77 Stockholm, Sweden 
First page
184
Publication year
2021
Publication date
2021
Publisher
MDPI AG
e-ISSN
26733501
Source type
Scholarly Journal
Language of publication
English
ProQuest document ID
2576377301
Copyright
© 2021 by the authors. Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). Notwithstanding the ProQuest Terms and Conditions, you may use this content in accordance with the terms of the License.