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Characteristics of a Kilowatt-Plus Helium Microwave-Induced Plasma Utilizing 2- and 3-cm-Depth TM010 Resonator Cavities

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Abstract:

A kilowatt-plus microwave-induced plasma (KiP-MIP) system was modified for better analytical performance. Modifications included the use of a redesigned plasma torch and a new plasma resonator cavity. The use of the redesigned plasma torch improved the detection of aqueous chloride by 2 orders of magnitude. With the redesigned plasma torch, the performance of the KiP-MIP utilizing the original 3-cm-depth and 2-cm-depth resonator cavities were studied. Results indicated that the KiP-MIP with the 2-cm-depth resonator cavity exhibited better characteristics in terms of plasma energy coupling, excitation characteristics, and determination of aqueous chloride.

Keywords: Atomic emission spectroscopy; Emission spectroscopy; Helium plasma; High-power microwave-induced plasma; Instrumentation, emission spectroscopy; Microwave-induced plasma; Nonmetal determination; Spectroscopic techniques

Document Type: Research Article

DOI: http://dx.doi.org/10.1366/0003702924444489

Affiliations: 1: Department of Chemistry, Northern Illinois University, DeKalb, Illinois 60115; current address: Department of Chemistry, Brigham Young University, Provo, UT 84602 2: Department of Chemistry, Northern Illinois University, DeKalb, Illinois 60115

Publication date: January 1, 1992

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