A procedure where the concentration of a known analyte may be determined by diluting
the sample with solvent until the
absorbance matches the
absorbance of the analyte in the reference cell. This method is particularly useful if the
Beer-Lambert law does not hold.
Source:
PAC, 1988, 60, 1449
(Nomenclature, symbols, units and their usage in spectrochemical analysis - VII. Molecular
absorption spectroscopy, ultraviolet and visible (UV/VIS) (Recommendations 1988))
on page 1456