| 单词 | isotope dilution |
| 释义 | > as lemmasisotope dilution isotope dilution n. a diminution of the concentration of one isotope (or isotopically labelled compound) by the addition or presence of another isotope of the same element (or of the unlabelled compound); esp. as a technique for measuring the amount of an element or compound in a system by introducing a known amount of a different isotope (or a labelled compound) and then measuring its concentration in a sample withdrawn from the system after mixing. ΘΚΠ the world > matter > chemistry > elements and compounds > isotopes > [noun] > isotope dilution isotope dilution1940 1940 Rittenberg & Foster in Jrnl. Biol. Chem. 133 737 (heading) A new procedure for quantitative analysis by isotope dilution. 1940 Rittenberg & Foster in Jrnl. Biol. Chem. 133 744 A new method (isotope dilution procedure) for the analysis of complex mixtures is described. 1956 Nature 28 Jan. 159/1 Isotope-dilution analysis, a technique which is now being increasingly applied in geology, agriculture, metallurgy and biology. 1971 Metabolism XX. 1099 (heading) Kinetics of potassium distribution in man using isotope dilution and whole-body counting. 1972 Chemico-Biol. Interactions IV. 103 This finding suggested that the decreases in specific activity were a result of isotope dilution rather than inhibition of protein synthesis. < as lemmas |
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