Journal cover Journal topic
Biogeosciences An interactive open-access journal of the European Geosciences Union
Journal topic
Volume 13, issue 16
Biogeosciences, 13, 4697–4705, 2016
https://doi.org/10.5194/bg-13-4697-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.
Biogeosciences, 13, 4697–4705, 2016
https://doi.org/10.5194/bg-13-4697-2016
© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Research article 22 Aug 2016

Research article | 22 Aug 2016

Fast-freezing with liquid nitrogen preserves bulk dissolved organic matter concentrations, but not its composition

Lisa Thieme et al.
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ED: Publish subject to minor revisions (Editor review) (06 Jul 2016) by Tina Treude
AR by L. Thieme on behalf of the Authors (19 Jul 2016)  Author's response    Manuscript
ED: Publish as is (20 Jul 2016) by Tina Treude
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Short summary
Freezing can affect dissolved organic matter properties and concentrations. Nevertheless, water samples are regularly frozen for sample preservation. To test, if fast-freezing with liquid nitrogen instead of normal freezing at −18 °C can prevent changes in DOM characteristics, we compared fresh and differently frozen terrestrial water samples. We found that fast-freezing with liquid nitrogen can prevent bulk organic matter concentrations but not its spectroscopic properties.
Freezing can affect dissolved organic matter properties and concentrations. Nevertheless, water...
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