USGS46 Greenland ice core water – A new isotopic reference material for δ2H and δ18O measurements of water

Geostandards and Geoanalytical Research
By: , and 

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Abstract

Ice core from Greenland was melted, filtered, homogenised, loaded into glass ampoules, sealed, autoclaved to eliminate biological activity, and calibrated by dual-inlet isotope-ratio mass spectrometry. This isotopic reference material (RM), USGS46, is intended as one of two secondary isotopic reference waters for daily normalisation of stable hydrogen (δ2H) and stable oxygen (δ18O) isotopic analysis of water with a mass spectrometer or a laser absorption spectrometer. The measured δ2H and δ18O values of this reference water were −235.8 ± 0.7‰ and −29.80 ± 0.03‰, respectively, relative to VSMOW on scales normalised such that the δ2H and δ18O values of SLAP reference water are, respectively, −428 and −55.5‰. Each uncertainty is an estimated expanded uncertainty (= 2uc) about the reference value that provides an interval that has about a 95-percent probability of encompassing the true value. This reference water is available in cases containing 144 glass ampoules that are filled with either 4 ml or 5 ml of water per ampoule.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title USGS46 Greenland ice core water – A new isotopic reference material for δ2H and δ18O measurements of water
Series title Geostandards and Geoanalytical Research
DOI 10.1111/j.1751-908X.2013.00267.x
Volume 38
Issue 2
Year Published 2015
Language English
Publisher Association scientifique pour la géologie et ses applications with the assistance of the Centre national de la recherche scientifique
Publisher location Vandoeuvre-lès-Nancy, France
Contributing office(s) National Research Program - Eastern Branch
Description 5 p.
First page 153
Last page 157
Online Only (Y/N) N
Additional Online Files (Y/N) N