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Quantitative Extraction of Dissolved Inorganic Carbon (as CO2) and Water by Vacuum Distillation from Sediments of the Unsaturated Zone for Carbon Isotope Analysis (13C and 14C)

  • I Carmi (a1) (a2), J Kronfeld (a1), Y Yechieli (a2), D Yakir (a3), M Stiller (a2) and E Boaretto (a4)...

Abstract

Vacuum distillation is shown to be useful for the quantitative extraction of dissolved inorganic carbon (as CO2) and water from sediments of the unsaturated zone in the Coastal Aquifer of Israel. Several tests of vacuum extractions from tap water and sediments are presented, including standard addition, which show that the distillation procedure is quantitative, with minimal or no carbon isotope fractionation. The optimal temperature of the sediment during the extraction was also defined. Examples of vacuum extractions of sediments are shown.

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Copyright

COPYRIGHT: © 2007 by the Arizona Board of Regents on behalf of the University of Arizona 

Corresponding author

Corresponding author. Email: carmiisr@post.tau.ac.il.

References

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Böttcher, G, Brumsack, H-J, Heinrichs, H, Pohlmann, M. 1997. A new high-pressure squeezing technique for pore fluid extraction from terrestrial soils. Water, Air and Soil Pollution 94(3–4):289–96.
Bruce, D, Friedman, GM, Kaufman, A, Yechieli, Y. 2001. Spatial variations of radiocarbon in the coastal aquifer of Israel—indicators of open and closed systems. Radiocarbon 43(2B):783–91.
Davidson, GR, Hardin, EL, Bassett, RL. 1995. Extraction of 14C from pore water in unsaturated rock using vacuum distillation. Radiocarbon 37(3):861–74.
Edmunds, WH, Bath, A. 1976. Centrifuge extraction and chemical analysis of interstitial waters. Environmental Science and Technology 10(5):467–72.
Kinniburgh, DG, Miles, DL. 1983. Extraction and chemical analysis of interstitial water from soils and rocks. Environmental Science and Technology 17(6):362–8.
Stumm, W, Morgan, JJ. 1995. Aquatic Chemistry: Chemical Equilibria and Rates in Natural Waters. 3rd edition. New York: Wiley-Interscience. 1040 p.

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