Assessment of a simple partial LTE model for semi-quantitative ICP-OES analysis based on one single element calibration standard

A novel approach to understanding the effect of matrix composition on analyte emission in an inductively coupled plasma

“…The three studies had one nding in common: alkali metals caused minimal plasma-based matrix effects, while other species, alkaline earth metals in particular, caused signicantly larger suppressions in analyte emission. Another nding of the Dettman and Olesik work relevant to this study is that a pLTE model of the plasma [11][12][13] can be effectively used in combination with a single internal standard to compensate for matrix effects in ICP-OES. In the pLTE model, departures from LTE arise because of a lack of detailed balance between collisional and radiative excitation and de-excitation processes.…”

Emission spectroscopic diagnostics of weakly ionized argon-diluted plasmas: glow discharge and inductively coupled plasma

“…Two different types of deviations from LTE were observed: These effects need to be accounted for in calibration models based on fundamental plasma parameters, e.g. reference [48], and when dealing with some excitation-related matrix effects, e.g. the 'hydrogen effect' in GDOES [4,19,43].…”

Atomic Spectroscopy

“…The increased knowledge on the excitation processes enabled it also to assess semiquantitative ICP-AES assuming simple partial LTE and the use of a single element calibration, as shown by Dettmann and Olesik. 75 Also it has been shown that in ICP-AES plasma-related matrix effects could be considerably lowered by measuring at the so-called crossover points. 76 The usefulness of internal standardization with the aim to improve the precision obtainable as well as to decrease matrix effects remained a further point of study for ICP-AES.…”

“…Taylor in the group of Farnsworth made radially resolved argon metastable density measurements with the aid of combined diode laser and pulsed dye laser experiments. The increased knowledge on the excitation processes enabled it also to assess semiquantitative ICP-AES assuming simple partial LTE and the use of a single element calibration, as shown by Dettmann and Olesik . Also it has been shown that in ICP-AES plasma-related matrix effects could be considerably lowered by measuring at the so-called crossover points .…”