校正电感耦合等离子体原子发射光谱中光谱干扰的一种新方法

A New Method for Correcting Spectral Interferences in Inductively Coupled Plasma-Atomic Emission Spectrometry

Based on ICP-AES spectral graphs with interferences, M-Gaussian(Lorentzion or Pseudo Voigt) curves and a binomical background are chosen as the mathematical model function of spectral curves with interferences. The correction of the emission spectral interferences is treated as waveform resolution problem. Weight factor and absolute value transformation are used in basic least squares fitting to make the contrained problem into an equal unconstrained one, which has made the new algorithm. Using the algorithm, a lot of analogous data with microcomputer have been made with satisfactory result. The authors also have experimented with some practical spectral curves in modern ICP spectrometer.