The specificity characteristic of analytical methods-I Non-specificity coefficients.
Two types of non-specificity coefficients are defined. These coefficients quantitatively characterize the change caused in an analytical result by the presence of interferents. The first of these coefficients describes a parallel shift of a calibration curve and the second a shift in the slope. The properties of these coefficients and of their practical application as characteristics of a method are discussed. The approach described may be used to characterize the specificity of an analytical method when the calibration curve is linear and the presence of an interferent causes a parallel shift of the curve or changes its slope but not its shape.
Pszonicki
L
L
Institute of Nuclear Research, Department of Analytical Chemistry, Warsaw Poland.