Stable isotope analysis of biochars

Keitel, Claudia, Ascough, Philippa, Wurster, Chris, and Bird, Michael (2017) Stable isotope analysis of biochars. In: Singh, Balwant, Camps-Arbestain, Marta, and Lehmann, Johannes, (eds.) Biochar: a guide to analytical methods. CSIRO Publishing, Melbourne, VIC, Australia, pp. 253-271.

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Abstract

For routine determination of stable isotope ratios of light elements (C, N, O, H, S) in organic samples, solids must be converted to gases for introduction into an isotope ratio mass spectrometer (IRMS).1The conversion to gases is achieved by preparation systems such as those described in Chapter 4, where samples are combusted or pyro-lysed and the gases thus liberated are separated from each other by gas chromatography (GC).2The gases are introduced to the IRMS through a fused-silica capillary with an inner diameter of 0.05–0.1μm which allows the preparation system to operate at atmospheric pressure, while the IRMS maintains the high vacuum needed to analyse the gases of interest.

Item ID: 52104
Item Type: Book Chapter (Research - B1)
ISBN: 978-1-4863-0509-4
Date Deposited: 22 Jan 2018 03:30
FoR Codes: 04 EARTH SCIENCES > 0402 Geochemistry > 040203 Isotope Geochemistry @ 50%
05 ENVIRONMENTAL SCIENCES > 0503 Soil Sciences > 050301 Carbon Sequestration Science @ 50%
SEO Codes: 96 ENVIRONMENT > 9605 Ecosystem Assessment and Management > 960501 Ecosystem Assessment and Management at Regional or Larger Scales @ 100%
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