isotope dilution

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isotope dilution

[′ī·sə‚tōp də‚lü·shən]
(nucleonics)
The introduction of a radioisotope into stable isotopes of an element in order to make volume, mass, and age measurements of the element.
References in periodicals archive ?
However, SUAC is not always available in sufficient quantities to enable detection by qualitative organic acid methods, and should be measured using a sensitive, stable isotopic dilution MS method.
The technique of [sup.13]C isotopic dilution demonstrated the trophic action of nucleotides in the liver, increasing its cell regeneration.
Stable isotopic dilution analysis liquid chromatography with tandem mass spectrometric detection (LC-MS/MS) has been used for assay of 8-OxodG [18].
1993, Carleton & Martinez del Rio 2010) that allow discriminating the isotopic changes caused either by diet (isotopic dilution through somatic growth) or by metabolic turnover.
Lean body mass was estimated based on the isotopic dilution space, and fat mass was estimated as total body mass minus lean mass (Schoeller et al., 1986).
LGC was asked to provide an independent reference value for the proficiency testing samples using Inductively Coupled Plasma Mass Spectrometry (ICP-MS) with isotopic dilution (IDMS), which revealed a bias of over 20% in the consensus value.
Hutchinson JL Young SD, McGrath SP, West HM, Black CR, Baker AJ (2000) Determining uptake of 'non-labile' soil cadmium by Thlaspi caerulescens using isotopic dilution techniques.
Two isotopic dilution procedures have predominated studies examining the phytoavailablility of soil elements and, depending upon the matrix sampled, have been designated as E or L values.
Hutchinson JJ, Young SD, McGrath SP, West HM, Black CR, Baker AJM (2000) Determining uptake of 'non-labile' soil cadmium by Thlaspi caerulescens using isotopic dilution techniques.
Tran TS, Fardeau JC, Giroux M (1988) Effects of soil properties on plant-available phosphorus determined by the isotopic dilution phosphorus-32 method.