Recent developments in microwave-induced plasma optical emission spectrometry and applications of a commercial Hammer-cavity instrument

Publication date: Available online 10 May 2019Source: TrAC Trends in Analytical ChemistryAuthor(s): Charles B. Williams, Bradley T. Jones, George L. Donati, Renata S. Amais, Beatriz M. Fontoura, Joaquim A. NóbregaAbstractMicrowave-induced plasma optical emission spectrometry (MIP OES) has increasingly become a major resource for multi-elemental analysis. One of the greatest breakthroughs in the field has been the development of a commercial instrument based on a Hammer cavity, which runs on N2 gas obtained from an air compressor and a N2 generator. Here, we describe the most recent advances in MIP OES instrumentation, as well as related developments in sample preparation and alternative sample introduction systems, strategies to reduce the effects of background emission and analytical signal fluctuations on accuracy, and new calibration and plasma diagnostics methods. Recently published studies have contributed to minimize matrix effects and improve robustness of MIP OES analysis, which allowed for applications involving a broad range of analytes and sample types. Together, the array of recent developments in MIP OES contributes to its acceptance and increasing adoption as a cost-effective alternative in trace element analysis.Graphical abstract

Source: TrAC Trends in Analytical Chemistry - May 11, 2019 Category: Chemistry Source Type: research