Buchumschlag

An ultra-clean firn core from the Devon Island Ice Cap, Nunavut, Canada, retrieved using a titanium drill specially designed for trace element studies

An electromechanical drill with titanium barrels was used to recover a 63.7 m long firn core from Devon Island Ice Cap, Nunavut, Canada, representing 155 years of precipitation. The core was processed and analysed at the Geological Survey of Canada by following strict clean procedures for measuremen...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: Zheng, Jiancheng (VerfasserIn) , Fisher, D. (VerfasserIn) , Blake, E. (VerfasserIn) , Hall, G. (VerfasserIn) , Vaive, J. (VerfasserIn) , Krachler, Michael (VerfasserIn) , Zdanowicz, C. (VerfasserIn) , Lam, J. (VerfasserIn) , Lawson, G. (VerfasserIn) , Shotyk, William (VerfasserIn)
Dokumenttyp: Article (Journal)
Sprache:Englisch
Veröffentlicht: 20 Feb 2006
In: Journal of environmental monitoring
Year: 2006, Jahrgang: 8, Heft: 3, Pages: 406-413
ISSN:1464-0333
DOI:10.1039/B515886A
Online-Zugang:Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1039/B515886A
Verlag, lizenzpflichtig, Volltext: https://pubs.rsc.org/en/content/articlelanding/2006/em/b515886a
Volltext
Verfasserangaben:J. Zheng, D. Fisher, E. Blake, G. Hall, J. Vaive, M. Krachler, C. Zdanowicz, J. Lam, G. Lawson, W. Shotyk
Beschreibung
Zusammenfassung:An electromechanical drill with titanium barrels was used to recover a 63.7 m long firn core from Devon Island Ice Cap, Nunavut, Canada, representing 155 years of precipitation. The core was processed and analysed at the Geological Survey of Canada by following strict clean procedures for measurements of Pb and Cd at concentrations at or below the pg g−1 level. This paper describes the effectiveness of the titanium drill with respect to contamination during ice core retrieval and evaluates sample-processing procedures in laboratories. The results demonstrate that: (1) ice cores retrieved with this titanium drill are of excellent quality with metal contamination one to four orders of magnitude less than those retrieved with conventional drills; (2) the core cleaning and sampling protocols used were effective, contamination-free, and adequate for analysis of the metals (Pb and Cd) at low pg g−1 levels; and (3) results from 489 firn core samples analysed in this study are comparable with published data from other sites in the Arctic, Greenland and the Antarctic.
Beschreibung:Gesehen am 29.09.2020
Beschreibung:Online Resource
ISSN:1464-0333
DOI:10.1039/B515886A

Ähnliche Einträge