UDC 681.2:543.423.1
Kuznetsov A. A., Meshkova O. B.
STUDY OF FACTORS AFFECTING STABILITY CALIBRATION DEPENDENCIES OF ATOMIC EMISSION SPECTROMETERS
Omsk State Transport University
This article contains information about the study of factors affecting the accuracy of atomic emission spectroscopy analysis of metals and alloys.
Key words: atomic emission spectral analysis, experimental design, influencing factors, accuracy.
Atomic emission spectral analysis (AESA) is widely used to define different grades of alloys based on copper, aluminum, iron, etc. The method has high sensitivity and detection limits of impurities of alloying elements, AESA is not sustainable over time, due to the instability affecting factors including that may shape of electrodes and the electrode gap with their burn-out, the fluctuations of the current applied to the electrodes, the firing time and exposure, the deviations of geometrical parameters of the entrance slit of the spectrometer, and others [1]. Under the influence of these factors calibration curves change their position, which is reflected in the displacement and the angle of inclination, in the case of the linear approximation [2].