Algorithm of Background Shape Calculation in a Sequence of Atomic-Absorption Spectra with a Continuous Radiation Source

Abstract

An algorithm of mathematical processing of the sequence of atomic-absorption spectra in time intended to be used for background shape calculation is presented. Each spectrum of the sequence considered in terms of the optical density is approximated by Savitzky Golay algorithm (polynomial approximation with a moving window) after removal of the absorption lines. Removal of the absorption lines is done through determination of the line position by the inflection points, evaluation of the amplitudes and removal of the lines up to the local minima. The algorithm is implemented as a load library for “Atom” software.