A study of the decontamination procedures used for chemical analysis of polar deep ice cores
We investigated the decontamination procedures used on polar deep ice cores before chemical analyses such as measurements of the concentrations of iron species and dust (microparticles). We optimized cutting and melting protocols for decontamination using chemically ultraclean polyethylene bags and...
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National Institute of Polar Research
2009
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ftdoajarticles:oai:doaj.org/article:00066810062d4d9f9d910fb93018fc3f 2023-05-15T16:38:47+02:00 A study of the decontamination procedures used for chemical analysis of polar deep ice cores Takayuki Miyake Motohiro Hirabayashi Ryu Uemura Kumiko Goto-Azuma Hideaki Motoyama 2009-11-01T00:00:00Z https://doi.org/10.15094/00009507 https://doaj.org/article/00066810062d4d9f9d910fb93018fc3f EN JA eng jpn National Institute of Polar Research http://doi.org/10.15094/00009507 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00009507 0085-7289 2432-079X https://doaj.org/article/00066810062d4d9f9d910fb93018fc3f Antarctic Record, Vol 53, Iss 3, Pp 259-282 (2009) Geography (General) G1-922 article 2009 ftdoajarticles https://doi.org/10.15094/00009507 2022-12-31T00:44:36Z We investigated the decontamination procedures used on polar deep ice cores before chemical analyses such as measurements of the concentrations of iron species and dust (microparticles). We optimized cutting and melting protocols for decontamination using chemically ultraclean polyethylene bags and simulated ice samples made from ultrapure water. For dust and ion species including acetate, which represented a high level of contamination, we were able to decrease contamination to below several μg l^<-1> for ion concentrations and below 10000 particles ml^<-1> for the dust concentration. These concentration levels of ion species and dust are assumed to be present in the Dome Fuji ice core during interglacial periods. Decontamination of the ice core was achieved by cutting away approximately 3 mm of the outside of a sample and by melting away approximately 30% of a sample's weight. Furthermore, we also report the preparation protocols for chemical analyses of the 2nd Dome Fuji ice core, including measurements of ion and dust concentrations, pH, electric conductivity (EC), and stable isotope ratios of water (δD and δ<18>O), based on the results of the investigation of the decontamination procedures. Article in Journal/Newspaper ice core Directory of Open Access Journals: DOAJ Articles Dome Fuji ENVELOPE(39.700,39.700,-77.317,-77.317) |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English Japanese |
topic |
Geography (General) G1-922 |
spellingShingle |
Geography (General) G1-922 Takayuki Miyake Motohiro Hirabayashi Ryu Uemura Kumiko Goto-Azuma Hideaki Motoyama A study of the decontamination procedures used for chemical analysis of polar deep ice cores |
topic_facet |
Geography (General) G1-922 |
description |
We investigated the decontamination procedures used on polar deep ice cores before chemical analyses such as measurements of the concentrations of iron species and dust (microparticles). We optimized cutting and melting protocols for decontamination using chemically ultraclean polyethylene bags and simulated ice samples made from ultrapure water. For dust and ion species including acetate, which represented a high level of contamination, we were able to decrease contamination to below several μg l^<-1> for ion concentrations and below 10000 particles ml^<-1> for the dust concentration. These concentration levels of ion species and dust are assumed to be present in the Dome Fuji ice core during interglacial periods. Decontamination of the ice core was achieved by cutting away approximately 3 mm of the outside of a sample and by melting away approximately 30% of a sample's weight. Furthermore, we also report the preparation protocols for chemical analyses of the 2nd Dome Fuji ice core, including measurements of ion and dust concentrations, pH, electric conductivity (EC), and stable isotope ratios of water (δD and δ<18>O), based on the results of the investigation of the decontamination procedures. |
format |
Article in Journal/Newspaper |
author |
Takayuki Miyake Motohiro Hirabayashi Ryu Uemura Kumiko Goto-Azuma Hideaki Motoyama |
author_facet |
Takayuki Miyake Motohiro Hirabayashi Ryu Uemura Kumiko Goto-Azuma Hideaki Motoyama |
author_sort |
Takayuki Miyake |
title |
A study of the decontamination procedures used for chemical analysis of polar deep ice cores |
title_short |
A study of the decontamination procedures used for chemical analysis of polar deep ice cores |
title_full |
A study of the decontamination procedures used for chemical analysis of polar deep ice cores |
title_fullStr |
A study of the decontamination procedures used for chemical analysis of polar deep ice cores |
title_full_unstemmed |
A study of the decontamination procedures used for chemical analysis of polar deep ice cores |
title_sort |
study of the decontamination procedures used for chemical analysis of polar deep ice cores |
publisher |
National Institute of Polar Research |
publishDate |
2009 |
url |
https://doi.org/10.15094/00009507 https://doaj.org/article/00066810062d4d9f9d910fb93018fc3f |
long_lat |
ENVELOPE(39.700,39.700,-77.317,-77.317) |
geographic |
Dome Fuji |
geographic_facet |
Dome Fuji |
genre |
ice core |
genre_facet |
ice core |
op_source |
Antarctic Record, Vol 53, Iss 3, Pp 259-282 (2009) |
op_relation |
http://doi.org/10.15094/00009507 https://doaj.org/toc/0085-7289 https://doaj.org/toc/2432-079X doi:10.15094/00009507 0085-7289 2432-079X https://doaj.org/article/00066810062d4d9f9d910fb93018fc3f |
op_doi |
https://doi.org/10.15094/00009507 |
_version_ |
1766029121121419264 |