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Direct equilibration of soil water for delta O-18 analysis and its application to tracer studies

McConville, C. and Kalin, R.M. and Flood, D. (1999) Direct equilibration of soil water for delta O-18 analysis and its application to tracer studies. Rapid Communications in Mass Spectrometry, 13 (13). pp. 1339-1345.

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Abstract

Current methods for stable oxygen isotopic (delta(18)O) analysis of soil water rely on separation of water from the soil matrix before analysis. These separation procedures are not only time consuming and require relatively large samples of soil, but also have been shown to introduce a large potential source of error. Current research at Queen's University Belfast is focused on using direct equilibration of CO2 with the pore water to eliminate this extraction step using the automated Multiprep system and a Micromass Prism III isotope ratio mass spectrometer (IRMS). The findings of this research indicate the method is less time consuming, more reliable, and reproducible to within accepted limits (+/-0.1%parts per thousand delta(18)O). In this study the direct equilibration method is used to analyse delta(18)O tracer profiles in the unsaturated zone of field soils, concurrently with chloride tracer profiles, which can be used to assess infiltration rates and mechanisms through the unsaturated zone. Copyright (C) 1999 John Wiley & Sons, Ltd.

Item type: Article
ID code: 31946
Notes: Annual Meeting on the Stable Isotope Mass Spectrometry Users Group (SIMSUG), EXETER, ENGLAND, JAN 19-20, 1999
Keywords: soil water , soil matrix , soil analysis, chloride tracer profiles, Bioengineering
Subjects: Technology > Engineering (General). Civil engineering (General) > Bioengineering
Department: Faculty of Engineering > Civil and Environmental Engineering
Related URLs:
Depositing user: Pure Administrator
Date Deposited: 29 Jun 2011 11:16
Last modified: 12 Mar 2012 11:29
URI: http://strathprints.strath.ac.uk/id/eprint/31946

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