Biogeosciences
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Articles | Volume 13, issue 10
Articles | Volume 13, issue 10
https://doi.org/10.5194/bg-13-3175-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/bg-13-3175-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Articles | Volume 13, issue 10
Research article
 | 
01 Jun 2016
Research article |  | 01 Jun 2016

2H and 18O depletion of water close to organic surfaces

Guo Chen, Karl Auerswald, and Hans Schnyder

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Short summary
Hydrophilic surfaces influence the structure of water close to them and may thus affect the isotope composition of water. Across a wide range of materials, fractionation became linearly more negative with increasing volumetric solid : water ratio and even exceeded −44 ‰ for 2H. This has major implications for the interpretation of the isotopic composition of extracted water, especially when the solid : water ratio is larger than 0.5 or for processes occurring at the solid–water interface.
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