Research Article

Oxygen isotope corrections for online δ34S analysis†

  1. Brian Fry1,*,
  2. Steven R. Silva2,
  3. Carol Kendall2,
  4. Richard K. Anderson3

Article first published online: 20 MAR 2002

DOI: 10.1002/rcm.651

Issue

Rapid Communications in Mass Spectrometry

Rapid Communications in Mass Spectrometry

Volume 16, Issue 9, pages 854–858, 15 May 2002

Additional Information

How to Cite

Fry, B., Silva, S. R., Kendall, C., Anderson, R. K. (2002), Oxygen isotope corrections for online δ34S analysis. Rapid Commun. Mass Spectrom., 16: 854–858. doi: 10.1002/rcm.651

Author Information

  1. 1

    Institute of Pacific Islands Forestry, USDA Forest Service, 1151 Punchbowl St., Room 323, Honolulu, HI 96813, USA

  2. 2

    United States Geological Survey, MS 434, 345 Middlefield Rd., Menlo Park, CA 94025, USA

  3. 3

    Coastal Science Laboratories, 6000 Mountain Shadows Dr., Austin, TX 78735, USA

*Institute of Pacific Islands Forestry, USDA Forest Service, 1151 Punchbowl St., Room 323, Honolulu, HI 96813, USA.

  1. †

    This article is a U.S. Government work and is in the public domain in the U.S.A.

Publication History

  1. Issue published online: 20 MAR 2002
  2. Article first published online: 20 MAR 2002
  3. Manuscript Accepted: 16 FEB 2002
  4. Manuscript Received: 15 FEB 2002

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

View Full Article (HTML) Get PDF (141K)

Abstract

Elemental analyzers have been successfully coupled to stable-isotope-ratio mass spectrometers for online measurements of the δ34S isotopic composition of plants, animals and soils. We found that the online technology for automated δ34S isotopic determinations did not yield reproducible oxygen isotopic compositions in the SO2 produced, and as a result calculated δ34S values were often 1–3‰ too high versus their correct values, particularly for plant and animal samples with high C/S ratio. Here we provide empirical and analytical methods for correcting the S isotope values for oxygen isotope variations, and further detail a new SO2-SiO2 buffering method that minimizes detrimental oxygen isotope variations in SO2. Published in 2002 by John Wiley & Sons, Ltd.

View Full Article (HTML) Get PDF (141K)