Observation of multilayer-structured discharge in plasma ionization breakdown

2021 ◽  
Vol 119 (26) ◽  
pp. 264102
Author(s):  
De-Qi Wen ◽  
Peng Zhang ◽  
Janez Krek ◽  
Yangyang Fu ◽  
John P. Verboncoeur
Keyword(s):  
Plasma Ionization

scholarly journals Surface acoustic wave nebulization improves compound selectivity of low-temperature plasma ionization for mass spectrometry

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andreas Kiontke ◽  
Mehrzad Roudini ◽  
Susan Billig ◽  
Amarghan Fakhfouri ◽  
Andreas Winkler ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Low Temperature ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Ionization Mechanism ◽  
Low Temperature Plasma ◽  
Ambient Conditions ◽  
Temperature Plasma ◽  
Plasma Ionization ◽  
Surface Acoustic Wave Nebulization

AbstractMass spectrometry coupled to low-temperature plasma ionization (LTPI) allows for immediate and easy analysis of compounds from the surface of a sample at ambient conditions. The efficiency of this process, however, strongly depends on the successful desorption of the analyte from the surface to the gas phase. Whilst conventional sample heating can improve analyte desorption, heating is not desirable with respect to the stability of thermally labile analytes. In this study using aromatic amines as model compounds, we demonstrate that (1) surface acoustic wave nebulization (SAWN) can significantly improve compound desorption for LTPI without heating the sample. Furthermore, (2) SAWN-assisted LTPI shows a response enhancement up to a factor of 8 for polar compounds such as aminophenols and phenylenediamines suggesting a paradigm shift in the ionization mechanism. Additional assets of the new technique demonstrated here are (3) a reduced analyte selectivity (the interquartile range of the response decreased by a factor of 7)—a significant benefit in non-targeted analysis of complex samples—and (4) the possibility for automated online monitoring using an autosampler. Finally, (5) the small size of the microfluidic SAWN-chip enables the implementation of the method into miniaturized, mobile LTPI probes.

Hollow Electrode Capillary Plasma Ionization Source for Rapid On‐line Detection of Gaseous Samples

2021 ◽  
Author(s):  
Wen Xu ◽  
Zeyue Shen ◽  
Junliang Zhang ◽  
Tengyu Zhang ◽  
Huanming Wu ◽  
...  
Keyword(s):  
Line Detection ◽  
Ionization Source ◽  
Plasma Ionization ◽  
Hollow Electrode ◽  
On Line

scholarly journals Author Correction: Surface acoustic wave nebulization improves compound selectivity of low-temperature plasma ionization for mass spectrometry

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andreas Kiontke ◽  
Mehrzad Roudini ◽  
Susan Billig ◽  
Armaghan Fakhfouri ◽  
Andreas Winkler ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Low Temperature ◽  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Plasma Ionization ◽  
Surface Acoustic Wave Nebulization

An amendment to this paper has been published and can be accessed via a link at the top of the paper.

An aerodynamic assisted miniature mass spectrometer for enhanced volatile sample analysis

The Analyst ◽  
2016 ◽  
Vol 141 (18) ◽  
pp. 5404-5411 ◽  
Author(s):  
Yanbing Zhai ◽  
Ting Jiang ◽  
Guangyan Huang ◽  
Yongzheng Wei ◽  
Wei Xu
Keyword(s):  
Mass Spectrometer ◽  
Atmospheric Pressure ◽  
Detection Sensitivity ◽  
Sample Analysis ◽  
Ionization Source ◽  
Plasma Ionization ◽  
Vacuum Plasma ◽  
Miniature Mass Spectrometer ◽  
Voc Detection

Low ppb-level VOC detection sensitivity was achieved by integrating an in-vacuum plasma ionization source into the continuous atmospheric pressure interfaced miniature mass spectrometer.

Gap-filling of Cu Employing Sustained Self-Sputtering with Inductively Coupled Plasma Ionization

1997 ◽  
Vol 36 (Part 1, No. 3B) ◽  
pp. 1469-1472 ◽  
Author(s):  
Takanori Ichiki ◽  
Toshiaki Kikuchi ◽  
Atsushi Sano ◽  
Shoso Shingubara ◽  
Yasuhiro Horiike
Keyword(s):  
Inductively Coupled Plasma ◽  
Gap Filling ◽  
Plasma Ionization ◽  
Inductively Coupled
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