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draw some inferences about the diet of fossil mammals from the stable isotope ratios in their bones. Sometimes stable isotope ratios are used as 'tracers' much as radiogenic isotopes are. So, for example, we can use oxygen isotope ratios in igneous rocks to determine whether they have assimilated crustal
Stable-isotope ratios. Measurement of the ratios of naturally occurring stable isotopes (isotope analysis) plays an important role in isotope geochemistry, but stable isotopes (mostly hydrogen, carbon, nitrogen, oxygen and sulfur) are also finding uses in ecological and biological studies.
Here we provide an overview of recent advances in uncovering the trophic structure of soil food webs using natural variations in stable isotope ratios. We discuss approaches of application ...
ESS 312 Geochemistry Tutorial on Stable Isotopes. (1) Isotopic compositions – the "δ" value. Differences in the 18O/16O, D/H or 13C/12C ratio among natural substances are small. Moreover, these absolute isotopic ratios are seldom measured.
Here, we introduce a unique, open-access, global database of stable water isotope ratios (δ18O, δ17O, and δ2H) from various water types. This database facilitates data preservation, supports standardized metadata collection, and decreases the time investment for meta-analytic research and reference dataset discovery.
Introduction to Stable Isotopes Measuring Isotopic Ratios ¥Convert element of interest into a stable gas. ¥Purify/separate gas analyte from contaminants (off-line or on-line) ¥Measure isotopic ratios on an isotope ratio mass spectrometer (IRMS)
15 mar 2012 · This article provides an introduction into stable isotope analysis, stable isotope terminology, and how isotope ratio measurements are quality controlled, while at the same time putting the information contained in stable isotope signatures into a forensic context.
