Dielectric barrier discharges in analytical chemistry

Abstract

The present review reflects the importance of dielectric barrier discharges in analytical chemistry. Special about this discharge is-and in contrast to usual discharges with direct current-that the plasma is separated from one or two electrodes by a dielectric barrier. This gives rise to two main features of the dielectric barrier discharges; it can serve as dissociation and excitation device and as ionization mechanism, respectively. The article portrays the various application fields for dielectric barrier discharges in analytical chemistry, for example the use for elemental detection with optical spectrometry or as ionization source for mass spectrometry. Besides the introduction of different kinds of dielectric barrier discharges used for analytical chemistry from the literature, a clear and concise classification of dielectric barrier discharges into capacitively coupled discharges is provided followed by an overview about the characteristics of a dielectric barrier discharge concerning discharge properties and the ignition mechanism.

Determination of Bismuth by Dielectric Barrier Discharge Atomic Absorption Spectrometry Coupled with Hydride Generation: Method Optimization and Evaluation of Analytical Performance

“…1 Its configuration is characterized by the presence of at least one dielectric barrier providing a small gap between two powered electrodes. Apart from using the DBD plasma as a desorption/ ionization tool with MS detection, analytical applications of DBDs reside in the field of volatile species generation, employing the DBD as an atomizer for atomic absorption (AAS) 2−4 and atomic fluorescence spectrometry 5−11 as well as an excitation source for atomic emission spectrometry.…”

Recent Advances in Graphitic Carbon Nitride-Based Chemiluminescence, Cataluminescence and Electrochemiluminescence

“…It can be concluded from the experimental results that the introduction of g-C 3 N 4 into the composite played a key role in enhancing CTL-sensing performance for H 2 S and reducing the CTL reaction temperature. Dielectric barrier discharge (DBD), refers to a kind of gas discharge in which strong nonequilibrium plasma at atmospheric pressure and at a moderate gas temperature is generated between two separated electrodes covered with dielectric barriers [103], was chosen as an assisted approach for synthesizing g-C Fig. 5a, the mixture of g-C 3 N 4 -Mn 2?…”

Characterization of rapidly-prototyped, battery-operated, argon-hydrogen microplasma on a hybrid chip for elemental analysis of microsamples by portable optical emission spectrometry

“…In addition to their small dimension as a key characteristic, microplasmas can be classified in a number of ways [1][2][3][4][5][6][7][8][9][10][11]. To name but a few, according to their operating pressure (e.g., atmospheric-pressure or low-pressure); according to the type of electrical power used to sustain them [8][9][10][11]; as gas-liquid microplasmas (e.g., those that use an electrolyte solution as part of an electrode [12][13][14][15][16]); according to their geometric shape (e.g., planar [10], microhollow [17]); and, according to their method of fabrication (e.g., micromachined or rapidly-prototyped microplasmas on planar, postage-stamp size 2D-chips or 3D-printed microplasmas on 3D-chips [18][19][20][21][22][23][24][25]).…”