characteristic mass for integrated absorbance, m0

in electrothermal atomization
https://doi.org/10.1351/goldbook.C00978
That mass of analyte which produces an integrated
absorbance
signal whose net area is equal to 0.0044 s.
Source:
PAC, 1992, 64, 253. (Nomenclature, symbols, units and their usage in spectrochemical analysis - XII. Terms related to electrothermal atomization (IUPAC Recommendations 1992)) on page 258 [Terms] [Paper]