Atmospheric pressure plasma jet with high-voltage power supply based on piezoelectric transformer

Abstract

The dielectric barrier discharge plasma jet, an example of the nonthermal atmospheric pressure plasma jet (APPJ), generates low-temperature plasmas that are suitable for the atomization of volatile species and can also be served as an ionization source for ambient mass and ion mobility spectrometry. A new design of APPJ for mass spectrometry has been built in our group. In these plasma sources magnetic transformers (MTs) and inductors are typically used in power supplies but they present several drawbacks that are even more evident when dealing with high-voltage normally used in APPJs. To overcome these disadvantages, high frequency generators with the absence of MT are proposed in the literature. However, in the case of miniaturized APPJs these conventional power converters, built of ferromagnetic cores and inductors or by means of LC resonant tank circuits, are not so useful as piezoelectric transformer (PT) based power converters due to bulky components and small efficiency. We made and examined a novel atmospheric pressure plasma jet with PT supplier served as ionization source for ambient mass spectrometry, and especially mobile spectrometry where miniaturization, integration of components, and clean plasma are required. The objective of this paper is to describe the concept, design, and implementation of this miniaturized piezoelectric transformer-based atmospheric pressure plasma jet.

Electrochemical generation of selegiline metabolites coupled to mass spectrometry

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Plasma‐based ambient ionization mass spectrometry in bioanalytical sciences

“…DBDI is a soft ionization technique, but some in‐source fragmentation can be present due to collisions with electrons or metastable species generated in the plasma. Recently, a new design of miniaturized DBDI sources based on piezoelectric transformers has been described (Babij et al, ).…”

Molecular Scavengers as Carriers of Analytes for Mass Spectrometry Identification

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