A @S06235@ in the measure of a signal caused by the presence of concomitants in a sample.
Source: PAC, 1983, 55, 553. (Recommendations for the usage of selective, selectivity and related terms in analytical chemistry) on page 554 [Terms] [Paper]
Cite as: IUPAC. Compendium of Chemical Terminology, 2nd ed. (the "Gold Book"). Compiled by A. D. McNaught and A. Wilkinson. Blackwell Scientific Publications, Oxford (1997). Online version (2019-) created by S. J. Chalk. ISBN 0-9678550-9-8. https://doi.org/10.1351/goldbook.