Journal article

Publication year: 2016

Pages: 3-10

Journal: Ecohydrology

Volume number: 9

Issue number: 1

ISSN: 1936-0584

Open access status: Hybrid

DOI Link: https://doi.org/10.1002/eco.1722

Publisher: Wiley

Abstract: 
Cryogenic water extraction is the most widely used method to facilitate the laboratory removal of soil pore water for isotopic analysis. However, recent studies have suggested that cryogenic extraction conditions (extraction time, temperature, vacuum threshold) and physicochemical soil properties can influence extracted water isotopic signatures. Here, we argue that new work is needed to analyse the full extent of these effects on the extracted water isotopic composition. We illustrate this need with a simple lab experiment and show that in addition to extraction times, soil organic matter and its exchangeable bonded hydrogen fraction influence the resulting isotope composition. We hope these comments stimulate discussion on the assumptions and limitations of cryogenic extraction for soil water and lead ultimately to a standardization of testing approaches. Copyright (c) 2016 John Wiley & Sons, Ltd.

Harvard Citation style: Orlowski, N., Breuer, L. and McDonnell, J. (2016) Critical issues with cryogenic extraction of soil water for stable isotope analysis, Ecohydrology, 9(1), pp. 3-10. https://doi.org/10.1002/eco.1722

APA Citation style: Orlowski, N., Breuer, L., & McDonnell, J. (2016). Critical issues with cryogenic extraction of soil water for stable isotope analysis. Ecohydrology. 9(1), 3-10. https://doi.org/10.1002/eco.1722