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Long-term effects of tungsten carbide (WC) nanoparticles in pelagic and benthic aquatic ecosystems
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Surface and Corrosion Science.
KTH, School of Engineering Sciences in Chemistry, Biotechnology and Health (CBH), Chemistry, Surface and Corrosion Science.
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2018 (English)In: Nanotoxicology, ISSN 1743-5390, E-ISSN 1743-5404, Vol. 12, no 1, p. 79-89Article in journal (Refereed) Published
Abstract [en]

As the production and usage of nanomaterials are increasing so are the concerns related to the release of the material into nature. Tungsten carbide (WC) is widely used for its hard metal properties, although its use, in for instance tyre studs, may result in nano-sized particles ending up in nature. Here, we evaluate the potential long-term exposure effects of WC nanoparticles on a pelagic (Daphnia magna) and a benthic (Asellus aquaticus) organism. No long-term effects were observed in the benthic system with respect to population dynamics or ecosystem services. However, long-term exposure of D. magna resulted in increased time to first reproduction and, if the particles were resuspended, strong effects on survival and reproductive output. Hence, the considerable differences in acute vs. long-term exposure studies revealed here emphasize the need for more long-term studies if we are to understand the effects of nanoparticles in natural systems.

Place, publisher, year, edition, pages
Taylor & Francis, 2018. Vol. 12, no 1, p. 79-89
Keywords [en]
Tungsten carbide, nanoparticles, Daphnia magna, Asellus aquaticus, nanotoxicology
National Category
Other Chemistry Topics
Identifiers
URN: urn:nbn:se:kth:diva-222451DOI: 10.1080/17435390.2017.1421274ISI: 000423562000006PubMedID: 29334298Scopus ID: 2-s2.0-85041224670OAI: oai:DiVA.org:kth-222451DiVA, id: diva2:1181628
Funder
Mistra - The Swedish Foundation for Strategic Environmental ResearchSwedish Research Council, 2016-03552
Note

QC 20180209

Available from: 2018-02-09 Created: 2018-02-09 Last updated: 2018-02-20Bibliographically approved

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CiteExportLink to record
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