Calculation of precision in isotope dilution experiments.
Abstract Equations are derived for the composite error of isotope dilution measurements in three types of experiment viz. simple dilution, saturation analysis (sub-stoichiometric dilution) and adsorbed ion measurement; the latter two yielding equations of the same form. Errors for each type are derived in terms of radiometric errors, chemical errors and a factor related to the extent of isotope dilution. In general, dilution is the most critical factor which controls error; chemical errors are usually less important than radiometric errors. A nomogram for calculating dilution errors is given.
The accuracy of isotope dilution methods.
BS>The accuracy of quantitative analyses by various isotope dilution methods is discussed. The most favorable amounts of dilution are derived under the assumption that the relative error, delta S/S, in measuring a specific activity, S, is independent of S. (auth)
The isotope dilution method and its application to analysis of inorganic substances.
Abstract General principles of isotope dilution with radioactive and stable tracers are considered. The importance of the purity of recovered substances and the dependence of accuracy on various factors are discussed. Practical application of the isotope dilution method to analysis of inorganic substances is briefly discussed. Determinations of antimony, yttrium, tantalum and niobium are given as illustrations.