characteristic mass for peak absorption, \(m_{\text{p}}\)

in electrothermal atomization

https://doi.org/10.1351/goldbook.C00979

That mass of analyte which produces a defined peak absorbance of 0.0044 (or 1% absorbance).

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 (https://doi.org/10.1351/pac199264020253)