| Abstract: | The ambiguity of the use of selectivity concept in currently available analytical separation techniques (including chromatographic techniques) is pointed out. In all cases when this term is applied, it should be specified for which analyte (or analytes) and with respect to which concomitant component (or components) selectivity is considered in order to eliminate uncertainties of this kind. It should also be specified whether the analysis as a whole, its individual stages, chromatographic systems, or their particular elements (such as columns or phases used in them) are characterized. Corresponding criteria should also be specified for derived terms such as selectivity control, selectivity improvement, etc. |
