翻訳と辞書 Words near each other ・ Isotopia Festival ・ Isotopic ・ Isotopic analysis by nuclear magnetic resonance ・ Isotopic labeling ・ Isotopic ratio outlier analysis ・ Isotopic shift ・ Isotopic signature ・ Isotopically pure diamond ・ Isotopologue ・ Isotopomers ・ Isotopy ・ Isotopy (semiotics) ・ Isotope 217 ・ Isotope 244 ・ Isotope analysis ・ Isotope dilution ・ Isotope effect ・ Isotope electrochemistry ・ Isotope fractionation ・ Isotope geochemistry ・ Isotope hydrology ・ Isotope lists ・ Isotope lists, 0-24 ・ Isotope lists, 25-48 ・ Isotope lists, 49-72 ・ Isotope lists, 73-96 ・ Isotope lists, 97+ ・ Isotope separation ・ Isotope-coded affinity tag ・ Isotope-ratio mass spectrometry Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Isotope dilution ： ウィキペディア英語版 Isotope dilution Isotope dilution analysis is a method of determining the quantity of chemical substances. In its most simple conception, the method of isotope dilution comprises the addition of known amounts of isotopically-enriched substance to the analyzed sample. Mixing of the isotopic standard with the sample effectively "dilutes" the isotopic enrichment of the standard and this forms the basis for the isotope dilution method. Isotope dilution is classified as a method of internal standardisation, because the standard (isotopically-enriched form of analyte) is added directly to the sample. In addition, unlike traditional analytical methods which rely on signal intensity, isotope dilution employs signal ratios. Owing to both of these advantages, the method of isotope dilution is regarded among chemistry measurement methods of the highest metrological standing. ==Early history== Analytical application of the radiotracer method is forerunner of isotope dilution. This method was developed in the early 20th century by George de Hevesy for which he was awarded the Nobel Prize in Chemistry for 1943. An early application of isotope dilution in the form of radiotracer method was determination of the solubility of lead sulphide and lead chromate in 1913 by George de Hevesy and Friedrich Adolf Paneth. In the 1930s, US biochemist David Rittenberg pioneered the use of isotope dilution in biochemistry enabling detailed studies of cell metabolism. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Isotope dilution」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.