## Wikipedia - Sensibilità di un sistema di misura (it) sensitivity, $$A$$

in metrology and analytical chemistry
https://doi.org/10.1351/goldbook.S05606
The slope of the @C00778@. If the curve is in fact a 'curve', rather than a straight line, then of course sensitivity will be a function of analyte concentration or amount. If sensitivity is to be a unique performance characteristic, it must depend only on the @C01030@, not upon scale factors.
Sources:
PAC, 1990, 62, 2167. (Glossary of atmospheric chemistry terms (Recommendations 1990)) on page 2174 [Terms] [Paper]
PAC, 1995, 67, 1699. (Nomenclature in evaluation of analytical methods including detection and quantification capabilities (IUPAC Recommendations 1995)) on page 1703 [Terms] [Paper]