isotopic enrichment


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isotopic enrichment

[¦ī·sə¦täp·ik in′rich·mənt]
(nucleonics)
The process by which the relative abundances of the isotopes of a given element are altered in a batch, thus producing a form of the element enriched in a particular isotope.
References in periodicals archive ?
[delta][sup.13]C (i) = isotopic enrichment of tissue, at the beginning (dimensionless);
The isotopic enrichment factor of denitrification can vary according to the denitrification rate constant and the substrate concentration (Ostrom et al.
That is, higher rates of denitrification result in higher (less negative) values of isotopic enrichment and lower rates result in lower (more negative) values of isotopic enrichment.
To overcome these difficulties in the GC/MS assessment of stable-isotope-labeled long-chain fatty acids in biological specimens, we have developed a new analytical protocol that includes the use of trimethylsilyl (TMS) esters as derivatized compounds and the calculation of isotopic enrichment from calibration curves obtained from mixtures containing known isotopic enrichments.
If we assume that [[delta].sub.species] = [[delta].sub.food ] + [delta] [plus or minus] [[sigma].sub.[delta]], where [[sigma].sub.[delta]] is the standard deviation of the values of isotopic enrichment ([delta]) in various species given in Gearing et al.
Tenders are invited for Xenon Gas Isotopic Enrichment : 10% Chemical Form : Gas : Total Gas Volume : 2 Liters, Packing : Lecture Bottle (Volumetric Capacity 500ml) With Control Valve And Pressure Measurement Regulator.
Estimates of isotopic enrichment of biota were made during the period of maximum enrichment and are reach (0-5 kin) averages.