Integrating Raman spectroscopy and LA-ICP-MS 2D imaging to decipher the localisation and chemistry of impurities on the microscale in Greenland ice: Consistencies and open question
Impurities in polar ice play, among others, a crucial role as a proxy for the paleoclimate while at the same time impacting the internal deformation of ice on the micro-scale. In particular, solid and dissolved impurities can impact grain growth through Zener pinning or the drag of grain boundaries....
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ftuniveneziairis:oai:iris.unive.it:10278/5036289 2024-02-04T09:54:35+01:00 Integrating Raman spectroscopy and LA-ICP-MS 2D imaging to decipher the localisation and chemistry of impurities on the microscale in Greenland ice: Consistencies and open question Stoll, Nicolas Bohleber, Pascal Hörhold, Maria Erhardt, Tobias Eichler, Jan Roman, Marco Delmonte, Barbara Barbante, Carlo Weikusat, Ilka Stoll, Nicola Bohleber, Pascal Hörhold, Maria Erhardt, Tobia Eichler, Jan Roman, Marco Delmonte, Barbara Barbante, Carlo Weikusat, Ilka 2022 https://hdl.handle.net/10278/5036289 https://doi.org/10.5194/egusphere-egu22-5035 eng eng EGU ispartofbook:EGU General Assembly 2022 EGU General Assembly 2022 https://hdl.handle.net/10278/5036289 doi:10.5194/egusphere-egu22-5035 info:eu-repo/semantics/closedAccess Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia info:eu-repo/semantics/conferenceObject 2022 ftuniveneziairis https://doi.org/10.5194/egusphere-egu22-5035 2024-01-10T17:39:37Z Impurities in polar ice play, among others, a crucial role as a proxy for the paleoclimate while at the same time impacting the internal deformation of ice on the micro-scale. In particular, solid and dissolved impurities can impact grain growth through Zener pinning or the drag of grain boundaries. Recent studies on natural ice from Antarctica and Greenland highlight the need for a multi-method approach to determine the differences in the localisation and chemistry of solid and dissolved impurities comprehensively, in order to ultimately gain a more holistic understanding. Here we report on a recent pilot investigation pursuing the direct integration of complimentary methods: microstructure-mapping, Cryo-Raman spectroscopy and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) with 2D impurity imaging. While LA-ICP-MS enables the fast mapping of cm-size areas with lateral resolution in the order of tens of μm, Raman spectroscopy is more suited to identify the mineralogical composition of individual solid inclusions at the single μm scale. We analysed samples from the Holocene and Last Glacial from the Northeast Greenland Ice Core Project (EGRIP) and the North Greenland Eemian Ice Drilling (NEEM) ice cores. We find that the general localisation patterns of impurities (e.g., low vs. high concentration) are similar for both methods. Furthermore, both methods show (clusters of) inclusions in the grain interior. These findings display that a holistic approach is needed to truly decipher the localisation of impurities in the ice microstructure. Combining the advantages of both methods gives a good overview of the localisation of impurities, both solid and dissolved, on the micro-scale. Localisation patterns are related to the chemistry of the analysed impurities displaying the need for high-resolution methods. For example, Na is strongly located in the grain boundaries, Al is preferentially located within the ice grains and Mg can be located in both regimes. We analyse the role of inclusions in ... Conference Object Antarc* Antarctica Greenland Greenland ice core Greenland Ice core Project ice core North Greenland Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) Greenland |
institution |
Open Polar |
collection |
Università Ca’ Foscari Venezia: ARCA (Archivio Istituzionale della Ricerca) |
op_collection_id |
ftuniveneziairis |
language |
English |
topic |
Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia |
spellingShingle |
Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia Stoll, Nicolas Bohleber, Pascal Hörhold, Maria Erhardt, Tobias Eichler, Jan Roman, Marco Delmonte, Barbara Barbante, Carlo Weikusat, Ilka Integrating Raman spectroscopy and LA-ICP-MS 2D imaging to decipher the localisation and chemistry of impurities on the microscale in Greenland ice: Consistencies and open question |
topic_facet |
Settore CHIM/01 - Chimica Analitica Settore GEO/08 - Geochimica e Vulcanologia |
description |
Impurities in polar ice play, among others, a crucial role as a proxy for the paleoclimate while at the same time impacting the internal deformation of ice on the micro-scale. In particular, solid and dissolved impurities can impact grain growth through Zener pinning or the drag of grain boundaries. Recent studies on natural ice from Antarctica and Greenland highlight the need for a multi-method approach to determine the differences in the localisation and chemistry of solid and dissolved impurities comprehensively, in order to ultimately gain a more holistic understanding. Here we report on a recent pilot investigation pursuing the direct integration of complimentary methods: microstructure-mapping, Cryo-Raman spectroscopy and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) with 2D impurity imaging. While LA-ICP-MS enables the fast mapping of cm-size areas with lateral resolution in the order of tens of μm, Raman spectroscopy is more suited to identify the mineralogical composition of individual solid inclusions at the single μm scale. We analysed samples from the Holocene and Last Glacial from the Northeast Greenland Ice Core Project (EGRIP) and the North Greenland Eemian Ice Drilling (NEEM) ice cores. We find that the general localisation patterns of impurities (e.g., low vs. high concentration) are similar for both methods. Furthermore, both methods show (clusters of) inclusions in the grain interior. These findings display that a holistic approach is needed to truly decipher the localisation of impurities in the ice microstructure. Combining the advantages of both methods gives a good overview of the localisation of impurities, both solid and dissolved, on the micro-scale. Localisation patterns are related to the chemistry of the analysed impurities displaying the need for high-resolution methods. For example, Na is strongly located in the grain boundaries, Al is preferentially located within the ice grains and Mg can be located in both regimes. We analyse the role of inclusions in ... |
author2 |
Stoll, Nicola Bohleber, Pascal Hörhold, Maria Erhardt, Tobia Eichler, Jan Roman, Marco Delmonte, Barbara Barbante, Carlo Weikusat, Ilka |
format |
Conference Object |
author |
Stoll, Nicolas Bohleber, Pascal Hörhold, Maria Erhardt, Tobias Eichler, Jan Roman, Marco Delmonte, Barbara Barbante, Carlo Weikusat, Ilka |
author_facet |
Stoll, Nicolas Bohleber, Pascal Hörhold, Maria Erhardt, Tobias Eichler, Jan Roman, Marco Delmonte, Barbara Barbante, Carlo Weikusat, Ilka |
author_sort |
Stoll, Nicolas |
title |
Integrating Raman spectroscopy and LA-ICP-MS 2D imaging to decipher the localisation and chemistry of impurities on the microscale in Greenland ice: Consistencies and open question |
title_short |
Integrating Raman spectroscopy and LA-ICP-MS 2D imaging to decipher the localisation and chemistry of impurities on the microscale in Greenland ice: Consistencies and open question |
title_full |
Integrating Raman spectroscopy and LA-ICP-MS 2D imaging to decipher the localisation and chemistry of impurities on the microscale in Greenland ice: Consistencies and open question |
title_fullStr |
Integrating Raman spectroscopy and LA-ICP-MS 2D imaging to decipher the localisation and chemistry of impurities on the microscale in Greenland ice: Consistencies and open question |
title_full_unstemmed |
Integrating Raman spectroscopy and LA-ICP-MS 2D imaging to decipher the localisation and chemistry of impurities on the microscale in Greenland ice: Consistencies and open question |
title_sort |
integrating raman spectroscopy and la-icp-ms 2d imaging to decipher the localisation and chemistry of impurities on the microscale in greenland ice: consistencies and open question |
publisher |
EGU |
publishDate |
2022 |
url |
https://hdl.handle.net/10278/5036289 https://doi.org/10.5194/egusphere-egu22-5035 |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Antarc* Antarctica Greenland Greenland ice core Greenland Ice core Project ice core North Greenland |
genre_facet |
Antarc* Antarctica Greenland Greenland ice core Greenland Ice core Project ice core North Greenland |
op_relation |
ispartofbook:EGU General Assembly 2022 EGU General Assembly 2022 https://hdl.handle.net/10278/5036289 doi:10.5194/egusphere-egu22-5035 |
op_rights |
info:eu-repo/semantics/closedAccess |
op_doi |
https://doi.org/10.5194/egusphere-egu22-5035 |
_version_ |
1789974548469252096 |