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<front>
<journal-meta>
<journal-id journal-id-type="publisher">EGUsphere</journal-id>
<journal-title-group>
<journal-title>EGUsphere</journal-title>
<abbrev-journal-title abbrev-type="publisher">EGUsphere</abbrev-journal-title>
<abbrev-journal-title abbrev-type="nlm-ta">EGUsphere</abbrev-journal-title>
</journal-title-group>
<issn pub-type="epub"></issn>
<publisher><publisher-name>Copernicus Publications</publisher-name>
<publisher-loc>Göttingen, Germany</publisher-loc>
</publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="doi">10.5194/egusphere-2025-61</article-id>
<title-group>
<article-title>New insights on particle characteristics of previously characterised EGRIP ice core samples via single particle ICP-TOFMS</article-title>
</title-group>
<contrib-group><contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Stoll</surname>
<given-names>Nicolas Angelo</given-names>
<ext-link>https://orcid.org/0000-0002-3219-8395</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff2">
<sup>2</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Clases</surname>
<given-names>David</given-names>
<ext-link>https://orcid.org/0000-0003-3880-9385</ext-link>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Gonzalez de Vega</surname>
<given-names>Raquel</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Elinkmann</surname>
<given-names>Matthias</given-names>
</name>
<xref ref-type="aff" rid="aff3">
<sup>3</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Larkman</surname>
<given-names>Piers Michael</given-names>
<ext-link>https://orcid.org/0000-0002-5374-7349</ext-link>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
</contrib>
<contrib contrib-type="author" xlink:type="simple"><name name-style="western"><surname>Bohleber</surname>
<given-names>Pascal</given-names>
</name>
<xref ref-type="aff" rid="aff1">
<sup>1</sup>
</xref>
<xref ref-type="aff" rid="aff4">
<sup>4</sup>
</xref>
<xref ref-type="aff" rid="aff5">
<sup>5</sup>
</xref>
</contrib>
</contrib-group><aff id="aff1">
<label>1</label>
<addr-line>Department of Environmental Sciences, Informatics and Statistics, Ca’Foscari University of Venice, Venice, Italy</addr-line>
</aff>
<aff id="aff2">
<label>2</label>
<addr-line>Department of Earth and Space Sciences, University of Washington, Seattle, USA</addr-line>
</aff>
<aff id="aff3">
<label>3</label>
<addr-line>Nano Micro LAB, Institute of Chemistry, University of Graz, Graz, Austria</addr-line>
</aff>
<aff id="aff4">
<label>4</label>
<addr-line>Department of Geosciences, Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research, Bremerhaven, Germany</addr-line>
</aff>
<aff id="aff5">
<label>5</label>
<addr-line>Department of Geosciences, Goethe University Frankfurt am Main, Germany</addr-line>
</aff>
<pub-date pub-type="epub">
<day>31</day>
<month>01</month>
<year>2025</year>
</pub-date>
<volume>2025</volume>
<fpage>1</fpage>
<lpage>28</lpage>
<permissions>
<copyright-statement>Copyright: &#x000a9; 2025 Nicolas Angelo Stoll et al.</copyright-statement>
<copyright-year>2025</copyright-year>
<license license-type="open-access">
<license-p>This work is licensed under the Creative Commons Attribution 4.0 International License. To view a copy of this licence, visit <ext-link ext-link-type="uri"  xlink:href="https://creativecommons.org/licenses/by/4.0/">https://creativecommons.org/licenses/by/4.0/</ext-link></license-p>
</license>
</permissions>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2025/egusphere-2025-61/">This article is available from https://egusphere.copernicus.org/preprints/2025/egusphere-2025-61/</self-uri>
<self-uri xlink:href="https://egusphere.copernicus.org/preprints/2025/egusphere-2025-61/egusphere-2025-61.pdf">The full text article is available as a PDF file from https://egusphere.copernicus.org/preprints/2025/egusphere-2025-61/egusphere-2025-61.pdf</self-uri>
<abstract>
<p>Polar ice cores contain an archive of chemical impurities, which can be used as a proxy for the past climate. State-of-the-art chemical methods increase our knowledge about these impurities, especially when applying a cascade of complementary techniques to the same samples. Single particle inductively coupled plasma-time of flight mass spectrometry (SP ICP-TOFMS) has yet to be fully utilised to study polar ice; only two studies have described its application so far. This is surprising given its capability to access critical physicochemical parameters of insoluble particles, such as number concentration, the mass and size distributions and elemental composition of deposited particles. In this study, we demonstrate the analysis of ice core samples, which have previously been characterised with Raman spectroscopy and laser-ablation inductively coupled plasma mass spectrometry, via SP ICP-TOFMS. By investigating melted samples, new possibilities for the in-depth geochemical analysis of deposited aerosols arise. We analyse nine samples from the EGRIP ice core from different climate periods throughout the last 50 ka. Samples from cold periods, such as Glacial Stadials, generally have the highest particle concentrations, especially when containing cloudy bands. We present an overview of the different particulate elements, which are largely unexplored in deep polar ice cores. We introduce a novel approach to estimating particle size by transferring mineralogy information from Raman spectroscopy, leading to a more accurate particle size representation via SP ICP-TOFMS, especially in the nanometre range. Our results show the largely untapped potential of SP ICP-TOFMS and demonstrate new opportunities to analyse intact particles as proxies for the palaeoclimate. The combination of impurity characterisation methods applied to the same samples empowered us to gain complimentary perspectives on particles and collect a comprehensive data set from the same samples. In view of the ongoing endeavour to retrieve the &quot;Oldest Ice&quot;, SP ICP-TOFMS may become a critical tool to access vital information and new depths of insights.</p>
</abstract>
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