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Imaging studies of emission and laser scattering from a solution-cathode glow discharge

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Abstract

Imaging experiments are performed on a solution-cathode glow discharge. Laser scattering is used to observe droplet trails ejected at a range of angles from the solution surface. Interference filters are used to photograph a variety of analyte emission lines and background emission bands. The effects of low molecular weight organic compounds (HCOOH and CH3CH2OH) and non-ionic surfactants (Triton X-45 and Triton X-405) on the spatial distributions of emission are studied. Low molecular weight organic compounds are found to affect the degree of emission for some species, but do not detectibly change the plasma structure. The lighter surfactant affects the degree of emission for some background species, but does not noticeably affect analyte emission or plasma structure. The heavier surfactant (Triton X-405) is found to affect both the degree of emission from some species and the overall structure of the plasma.

Graphical abstract: Imaging studies of emission and laser scattering from a solution-cathode glow discharge

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Article information


Submitted
30 Mar 2020
Accepted
14 May 2020
First published
14 May 2020

J. Anal. At. Spectrom., 2020, Advance Article
Article type
Paper

Imaging studies of emission and laser scattering from a solution-cathode glow discharge

D. E. Moon and M. R. Webb, J. Anal. At. Spectrom., 2020, Advance Article , DOI: 10.1039/D0JA00134A

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