Standardization for oxygen isotope ratio measurement - Still an unsolved problem

Kornexl, B. E.; Werner, R. A.; Gehre, M.

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Standardization for oxygen isotope ratio measurement - Still an unsolved problem

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Werner, R. A.
Service Facility Stable Isotope/Gas Analytics, Dr. W. A. Brand, Max Planck Institute for Biogeochemistry, Max Planck Society;

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Kornexl, B. E., Werner, R. A., & Gehre, M. (1999). Standardization for oxygen isotope ratio measurement - Still an unsolved problem. Rapid Communications in Mass Spectrometry, 13(13), 1248-1251.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000E-CBEA-2

Abstract

Numerous organic and inorganic laboratory standards were gathered from nine European and North American laboratories and were analyzed for their delta(18)O values with a new on-line high temperature pyrolysis system that was calibrated using Vienna standard mean ocean water (VSMOW) and standard light Antartic precipitation (SLAP) internationally distributed reference water samples. Especially for organic materials, discrepancies between reported and measured values were high, ranging up to 2 parts per thousand. The reasons for these discrepancies are discussed and the need for an exact and reliable calibration of existing reference materials, as well as for the establishment of additional organic and inorganic reference materials is stressed. Copyright (C) 1999 John Whey & Sons, Ltd. [References: 41]