- isotope dilution
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isotope dilution
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isotope dilution — ▪ chemistry radiochemical method of analysis for measuring the mass and quantity of an element in a substance. The procedure involves adding to a substance a known quantity of a radioisotope of the element to be measured and mixing it with… … Universalium
DILUTION ISOTOPIQUE — En essayant de séparer le radioplomb (Ra D) du plomb inactif dans un échantillon de plomb, G. de Hevesy s’aperçut que cette séparation était impossible à réaliser par les méthodes habituelles. Il eut l’idée d’utiliser le Ra D fortement dilué dans … Encyclopédie Universelle
Isotopic 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… … Wikipedia
isotopic dilution — noun any technique that involves the addition to a sample of an isotopically labelled compound Syn: isotope dilution … Wiktionary
ID-MS — isotope dilution mass spectrometry … Medical dictionary
ID-MS — • isotope dilution mass spectrometry … Dictionary of medical acronyms & abbreviations
dating — I In geology and archaeology, the process of determining an object s or event s place within a chronological scheme. Scientists may use either relative dating, in which items are sequenced on the basis of stratigraphic clues (see stratigraphy) or … Universalium
Dimethyltryptamine — Systematic (IUPAC) name 2 (1H indol 3 yl) N … Wikipedia
analysis — /euh nal euh sis/, n., pl. analyses / seez /. 1. the separating of any material or abstract entity into its constituent elements (opposed to synthesis). 2. this process as a method of studying the nature of something or of determining its… … Universalium
mass spectrometry — or mass spectroscopy Analytic technique by which chemical substances are identified by sorting gaseous ions by mass using electric and magnetic fields. A mass spectrometer uses electrical means to detect the sorted ions, while a mass spectrograph … Universalium
