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Nickel and cobalt release from fidget spinners on the Danish market

2018; Wiley; Volume: 78; Issue: 5 Linguagem: Inglês

10.1111/cod.12924

1600-0536

Malin G. Ahlström, Jacob P. Thyssen, Torkil Menné, Morten Stendahl Jellesen, Peter Jacob Schwencke Westermann, Jeanne D. Johansen,

Recycling and Waste Management Techniques

Contact DermatitisVolume 78, Issue 5 p. 357-359 Contact Point Nickel and cobalt release from fidget spinners on the Danish market Malin G. Ahlström, Corresponding Author Malin G. Ahlström malin.glindvad.ahlstroem.01@regionh.dk orcid.org/0000-0003-2092-7826 Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, DenmarkCorrespondence: MD Malin Glindvad Ahlström, Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, DK2900 Hellerup, Denmark. Tel: +45 38677310. Email: malin.glindvad.ahlstroem.01@regionh.dkSearch for more papers by this authorJacob P. Thyssen, Jacob P. Thyssen Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, DenmarkSearch for more papers by this authorTorkil Menné, Torkil Menné Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, DenmarkSearch for more papers by this authorMorten S. Jellesen, Morten S. Jellesen orcid.org/0000-0002-3253-0351 Department of Mechanical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, DenmarkSearch for more papers by this authorPeter J. S. Westermann, Peter J. S. Westermann Department of Mechanical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, DenmarkSearch for more papers by this authorJeanne D. Johansen, Jeanne D. Johansen Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, DenmarkSearch for more papers by this author Malin G. Ahlström, Corresponding Author Malin G. Ahlström malin.glindvad.ahlstroem.01@regionh.dk orcid.org/0000-0003-2092-7826 Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, DenmarkCorrespondence: MD Malin Glindvad Ahlström, Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, DK2900 Hellerup, Denmark. Tel: +45 38677310. Email: malin.glindvad.ahlstroem.01@regionh.dkSearch for more papers by this authorJacob P. Thyssen, Jacob P. Thyssen Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, DenmarkSearch for more papers by this authorTorkil Menné, Torkil Menné Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, DenmarkSearch for more papers by this authorMorten S. Jellesen, Morten S. Jellesen orcid.org/0000-0002-3253-0351 Department of Mechanical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, DenmarkSearch for more papers by this authorPeter J. S. Westermann, Peter J. S. Westermann Department of Mechanical Engineering, Technical University of Denmark, 2800 Kgs. Lyngby, DenmarkSearch for more papers by this authorJeanne D. Johansen, Jeanne D. Johansen Department of Dermatology and Allergy, National Allergy Research Centre, Herlev and Gentofte Hospital, University of Copenhagen, 2900 Hellerup, DenmarkSearch for more papers by this author First published: 02 April 2018 https://doi.org/10.1111/cod.12924Citations: 8 Conflict of interests: None of the authors declare any conflict of interests pertinent to the present article. Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinkedInRedditWechat No abstract is available for this article.Citing Literature Supporting Information Filename Description cod12924-sup-0001-FigureS1.jpgJPEG image, 3.9 MB Figure S1. (a) Cobalt spot test of the centre ball bearing resulting in green discolouration, believed to be caused by iron release. Qualitative analysis showed chromium-containing iron alloy, indicating that the ball could be made of DIN 100Cr6 – a conventionally used ball bearing steel type. (b) Cobalt spot test resulting in green and rust-like discolouration (also shown on a cotton stick) of the metal parts of three outer bearings of the wings. Qualitative analysis confirmed high amounts of iron being present. (c) Cobalt spot test resulting in light brown discolouration from the centre pad (removed), believed to be caused by copper ion release, as the qualitative analysis suggests the centre pad to be made of brass. cod12924-sup-0002-FigureS2.jpgJPEG image, 18.8 MB Figure S2. (a) A fidget spinner before dismantling. (b, c) Metal balls from the wings are nickel-plated iron balls that were positive with the DMG spot test (b) and light brown with the cobalt spot test (c). Also, the centre ball bearing and the metal of the three outer bearings of the wings resulted in green discolouration. cod12924-sup-0003-TableS1.xlsxMS Excel, 8.6 KB Table S1. Spot test results. cod12924-sup-0004-TableS2.xlsxMS Excel, 27.8 KB Table S2. Full test result list for 10 fidget spinners, tested by DMG and cobalt spot test and XRF analysis. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Volume78, Issue5May 2018Pages 357-359 RelatedInformation