Naslov
Discussion of fundamental processes in dielectric barrier discharges used for soft ionization

Autori
Horvatić, Vlasta ; Vadla, Čedomil ; Franzke, Joachim

Izvornik
Spectrochimica acta. Part B, Atomic spectroscopy (0584-8547) 100 (2014); 52-61

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Ambient air ionization; Dielectric barrier discharge; Homogeneous discharge; Filamentary discharge; Rotational temperature

Sažetak
Permanent need for simple to apply and efficient methods for molecular mass spectrometry resulted in the development of a variety of methods now commonly termed ambient desorption/ionization mass spectrometry (ADI-MS), which experienced a very rapid development during the last 10 years. The most widely used techniques are direct analysis in real time (DART), plasma assisted desorption/ionization (PADI), flowing afterglow-atmospheric pressure glow discharge ionization (FA-APGDI), low-temperature plasma probe (LTP) and dielectric barrier discharge ionization (DBDI). They all share the advantage of direct, ambient analysis of samples with little or no pretreatment, and employ some kind of electrical discharge to desorb and ionize the analyte species. However, the investigations focused on the characterization, examination and understanding of underlying ionization mechanisms of these discharges are relatively small in number. More efforts are clearly needed in this segment, since the understanding of the fundamentals of these discharges is a prerequisite for optimization of working parameters of ADI-MS sources with the aim of increasing ionization efficiency. Here, ADI-MS techniques will be overviewed, with the emphasis put on the review and the analysis of the recent progress in dielectric barrier discharges utilized for soft ionization.

Izvorni jezik
Engleski

Znanstvena područja
Fizika

Napomena
Dedicated To Nicolo Omenetto On the Occasion of his 75th Birthday.

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