globalchange  > 气候变化与战略
DOI: 10.5194/hess-22-3619-2018
论文题名:
Inter-laboratory comparison of cryogenic water extraction systems for stable isotope analysis of soil water
作者: Orlowski N.; Breuer L.; Angeli N.; Boeckx P.; Brumbt C.; Cook C.S.; Dubbert M.; Dyckmans J.; Gallagher B.; Gralher B.; Herbstritt B.; Hervé-Fernández P.; Hissler C.; Koeniger P.; Legout A.; Joan MacDonald C.; Oyarzún C.; Redelstein R.; Seidler C.; Siegwolf R.; Stumpp C.; Thomsen S.; Weiler M.; Werner C.; McDonnell J.J.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2018
卷: 22, 期:7
起始页码: 3619
结束页码: 3637
语种: 英语
Scopus关键词: Cryogenics ; Deionized water ; Isotopes ; Laboratories ; Network security ; Routers ; Soil moisture ; Soil testing ; Calibration functions ; Extraction efficiencies ; Interlaboratory comparison ; Isotope ratio mass spectrometer ; Laboratory inter-comparison ; Physicochemical characteristics ; Spectral interference ; Stable-isotope analysis ; Extraction ; calibration ; comparative study ; extraction method ; hydrogen isotope ; hydrogeochemistry ; isotopic composition ; laboratory method ; oxygen isotope ; physicochemical property ; soil water ; stable isotope ; Canada ; Saskatchewan ; Saskatoon
英文摘要: For more than two decades, research groups in hydrology, ecology, soil science, and biogeochemistry have performed cryogenic water extractions (CWEs) for the analysis of δ2H and δ18O of soil water. Recent studies have shown that extraction conditions (time, temperature, and vacuum) along with physicochemical soil properties may affect extracted soil water isotope composition. Here we present results from the first worldwide round robin laboratory intercomparison. We test the null hypothesis that, with identical soils, standards, extraction protocols, and isotope analyses, cryogenic extractions across all laboratories are identical. Two standard soils with different physicochemical characteristics along with deionized (DI) reference water of known isotopic composition were shipped to 16 participating laboratories. Participants oven-dried and rewetted the soils to 8 and 20% gravimetric water content (WC), using the deionized reference water. One batch of soil samples was extracted via predefined extraction conditions (time, temperature, and vacuum) identical to all laboratories; the second batch was extracted via conditions considered routine in the respective laboratory. All extracted water samples were analyzed for δ18O and δ2H by the lead laboratory (Global Institute for Water Security, GIWS, Saskatoon, Canada) using both a laser and an isotope ratio mass spectrometer (OA-ICOS and IRMS, respectively). We rejected the null hypothesis. Our results showed large differences in retrieved isotopic signatures among participating laboratories linked to soil type and soil water content with mean differences compared to the reference water ranging from C18.1 to 108.4 for δ2H and +1.8 to 14.9‰ for δ18O across all laboratories. In addition, differences were observed between OA-ICOS and IRMS isotope data. These were related to spectral interferences during OA-ICOS analysis that are especially problematic for the clayey loam soils used. While the types of cryogenic extraction lab construction varied from manifold systems to single chambers, no clear trends between system construction, applied extraction conditions, and extraction results were found. Rather, observed differences in the isotope data were influenced by interactions between multiple factors (soil type and properties, soil water content, system setup, extraction efficiency, extraction system leaks, and each lab's internal accuracy). Our results question the usefulness of cryogenic extraction as a standard for water extraction since results are not comparable across laboratories. This suggests that defining any sort of standard extraction procedure applicable across laboratories is challenging. Laboratories might have to establish calibration functions for their specific extraction system for each natural soil type, individually. © 2018 Author(s).
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/163264
Appears in Collections:气候变化与战略

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作者单位: Orlowski, N., Global Institute for Water Security, School of Environment and Sustainability, University of Saskatchewan, Saskatoon, Canada, Institute for Landscape Ecology and Resources Management, Research Centre for BioSystems, Justus Liebig University Giessen, Giessen, Germany, Department of Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany; Breuer, L., Institute for Landscape Ecology and Resources Management, Research Centre for BioSystems, Justus Liebig University Giessen, Giessen, Germany, Centre for International Development and Environmental Research, Justus Liebig University Giessen, Giessen, Germany; Angeli, N., INRA, UHP Ecologie et Ecophysiologie Forestières, INRA Centre de Nancy, Champenoux, France; Boeckx, P., Isotope Bioscience Laboratory, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium; Brumbt, C., Instituto de Ciencias de la Tierra, Universidad Austral de Chile, Valdivia, Chile; Cook, C.S., Department of Ecosystem Science and Management, Stable Isotope Facility, University of Wyoming, Laramie, United States; Dubbert, M., BayCEER, University of Bayreuth, Bayreuth, Germany, Ecosystem Physiology, University of Freiburg, Freiburg, Germany; Dyckmans, J., Institute of Soil Science and Forest Nutrition, Centre for Stable Isotope Research and Analysis, University of Göttingen, Göttingen, Germany; Gallagher, B., Institute for Environmental Research, Australia Nuclear Science and Technology Organization, Sydney, Australia; Gralher, B., Institute of Groundwater Ecology, German Research Center for Environmental Health, Helmholtz Zentrum München, Neuherberg, Germany; Herbstritt, B., Department of Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany; Hervé-Fernández, P., Isotope Bioscience Laboratory, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium, Instituto de Ciencias de la Tierra, Universidad Austral de Chile, Valdivia, Chile, Laboratory of Hydrology and Water Management, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium; Hissler, C., Luxembourg Institute of Science and Technology (LIST), Department of Environmental Research and Innovation, Luxembourg, Belgium; Koeniger, P., German Federal Institute for Geosciences and Natural Resources, Hanover, Germany; Legout, A., INRA UR1138 Biogeóchimie des Ecosystèmes Forestiers, INRA Centre de Nancy, Champenoux, France; Joan MacDonald, C., Department of Ecosystem Science and Management, Stable Isotope Facility, University of Wyoming, Laramie, United States; Oyarzún, C., Instituto de Ciencias de la Tierra, Universidad Austral de Chile, Valdivia, Chile; Redelstein, R., Plant Ecology and Ecosystems Research, University of Göttingen, Göttingen, Germany; Seidler, C., Ecophysiology of Plants, Technical University of Munich, Munich, Germany; Siegwolf, R., Stable Isotope Research Facility, Paul Scherrer Institute, Villigen, Switzerland; Stumpp, C., Institute of Groundwater Ecology, German Research Center for Environmental Health, Helmholtz Zentrum München, Neuherberg, Germany, Institute of Hydraulics and Rural Water Management (IHLW), University of Natural and Life Sciences, Vienna, Austria; Thomsen, S., Institute of Soil Science, University of Hamburg, Hamburg, Germany; Weiler, M., Department of Hydrology, Faculty of Environment and Natural Resources, University of Freiburg, Freiburg, Germany; Werner, C., BayCEER, University of Bayreuth, Bayreuth, Germany, Ecosystem Physiology, University of Freiburg, Freiburg, Germany; McDonnell, J.J., Global Institute for Water Security, School of Environment and Sustainability, University of Saskatchewan, Saskatoon, Canada

Recommended Citation:
Orlowski N.,Breuer L.,Angeli N.,et al. Inter-laboratory comparison of cryogenic water extraction systems for stable isotope analysis of soil water[J]. Hydrology and Earth System Sciences,2018-01-01,22(7)
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