isotopic-abundance ratio
1abundance ratio — izotopų santykis statusas T sritis fizika atitikmenys: angl. abundance ratio; isotopic ratio; relative isotopic abundance vok. Isotopenhäufigkeitsverhältnis, n; Isotopenverhältnis, n rus. изотопное отношение, n; относительная распространённость… …
2relative isotopic abundance — izotopų santykis statusas T sritis fizika atitikmenys: angl. abundance ratio; isotopic ratio; relative isotopic abundance vok. Isotopenhäufigkeitsverhältnis, n; Isotopenverhältnis, n rus. изотопное отношение, n; относительная распространённость… …
3isotopic ratio — izotopų santykis statusas T sritis fizika atitikmenys: angl. abundance ratio; isotopic ratio; relative isotopic abundance vok. Isotopenhäufigkeitsverhältnis, n; Isotopenverhältnis, n rus. изотопное отношение, n; относительная распространённость… …
4isotopic fractionation — ▪ chemistry enrichment of one isotope relative to another in a chemical or physical process. Two isotopes of an element are different in weight but not in gross chemical properties, which are determined by the number of electrons. However,… …
5Isotopic labeling — (or isotopic labelling) is a technique for tracking the passage of a sample of substance through a system. The substance is labeled by including unusual isotopes in its chemical composition. If these unusual isotopes are later detected in a… …
6Isotopic dilution — is a technique to increase the precision and accuracy of chemical analysis. First, a known amount of an isotope is added to the sample. For example, to determine the amount of lead in a sample, a known amount of Pb 204, one of the isotopes of… …
7Atomic ratio — The atomic ratio is a measure of the ratio of atoms of one kind (i) to another kind (j). A closely related concept is the atomic percent (or at.%), which gives the percentage of one kind of atom relative to the total number of atoms. The… …
8Isotope-ratio mass spectrometry — Isotope ratio mass spectrometer with gas bench in foreground Acronym IRMS Classification mass spectrometry Other techniques …
9Isotope ratio mass spectrometry — Infobox chemical analysis name = Isotope ratio mass spectrometry caption =Isotope ratio mass spectrometer with gas bench in foreground acronym = IRMS classification =mass spectrometry analytes = manufacturers = related = Accelerator mass… …
10Oxygen isotope ratio cycle — Oxygen isotope ratio cycles are cyclical variations in the ratio of the abundance of oxygen with an atomic mass of 18 to the abundance of oxygen with an atomic mass of 16 present in some substances, such as polar ice or calcite in ocean core… …
