Gas-dynamic fluctuations and noises in the interface of an atmospheric pressure ionization ion source

2011 ◽  
Vol 66 (14) ◽  
pp. 1392-1397 ◽  
Author(s):  
A. N. Bazhenov ◽  
S. V. Bulovich ◽  
L. N. Gall’ ◽  
N. R. Gall’
Keyword(s):  
Atmospheric Pressure ◽  
Ion Source ◽  
Atmospheric Pressure Ionization ◽  
Gas Dynamic

Impurity Measurement in Specialty Gases Using an Atmospheric Pressure Ionization Mass Spectrometer with a Two-Compartment Ion Source

2001 ◽  
Vol 40 (Part 1, No. 4B) ◽  
pp. 2688-2693 ◽  
Author(s):  
Masafumi Kitano ◽  
Yasuyuki Shirai ◽  
Atsushi Ohki ◽  
Shinichi Babasaki ◽  
Tadahiro Ohmi
Keyword(s):  
Mass Spectrometer ◽  
Atmospheric Pressure ◽  
Ion Source ◽  
Ionization Mass ◽  
Atmospheric Pressure Ionization

scholarly journals A Tapered Capillary-Based Contactless Atmospheric Pressure Ionization Mass Spectrometry for On-Line Preconcentration and Separation of Small Organics

Separations ◽  
2021 ◽  
Vol 8 (8) ◽  
pp. 111
Author(s):  
Yen-Chun Chen ◽  
Arun Krishnamurthy ◽  
Szu-Hua Chen ◽  
Yu-Chie Chen
Keyword(s):  
Mass Spectrometry ◽  
Atmospheric Pressure ◽  
Capillary Electrochromatography ◽  
Ion Source ◽  
Ionization Mass ◽  
Atmospheric Pressure Ionization ◽  
Online Preconcentration ◽  
Hyphenated Technique ◽  
On Line ◽  
Pressure Ionization Mass Spectrometry

Capillary electrophoresis (CE) is an effective technique for the separation of different analytes. Moreover, online preconcentration of trace analytes in the capillary for CE analysis has been demonstrated. CE and capillary electrochromatography (CEC) are suitable for the separation of analytes with similar polarities. Given that CE and CEC are only used to separate small-volume samples, sensitive mass spectrometry (MS) is a suitable detection tool for CE and CEC. Contactless atmospheric pressure ionization (C-API) is a continuous flow ion source that only uses a short capillary as the ionization emitter operated at atmospheric pressure for MS analysis. In this study, we demonstrated the feasibility of hyphenating CE/CEC with C-API-MS by using a short and tapered capillary as the interface. The short capillary (a few centimeters) can function as the separation/preconcentration tube and the ionization emitter. This hyphenated technique can be used to analyze small organics within a few minutes. The suitability of using the hyphenated technique for online preconcentration, separation, and quantitative analysis for small organics is demonstrated in this study.

scholarly journals Nontargeted Screening Using Gas Chromatography–Atmospheric Pressure Ionization Mass Spectrometry: Recent Trends and Emerging Potential

Molecules ◽  
2021 ◽  
Vol 26 (22) ◽  
pp. 6911
Author(s):  
Xiaolei Li ◽  
Frank L. Dorman ◽  
Paul A. Helm ◽  
Sonya Kleywegt ◽  
André Simpson ◽  
...  
Keyword(s):  
Mass Spectrometry ◽  
Gas Chromatography ◽  
Atmospheric Pressure ◽  
High Resolution Mass Spectrometry ◽  
Environmental Pollutants ◽  
Molecular Ions ◽  
Ion Source ◽  
Ionization Mass ◽  
Atmospheric Pressure Ionization ◽  
Wide Range

Gas chromatography–high-resolution mass spectrometry (GC–HRMS) is a powerful nontargeted screening technique that promises to accelerate the identification of environmental pollutants. Currently, most GC–HRMS instruments are equipped with electron ionization (EI), but atmospheric pressure ionization (API) ion sources have attracted renewed interest because: (i) collisional cooling at atmospheric pressure minimizes fragmentation, resulting in an increased yield of molecular ions for elemental composition determination and improved detection limits; (ii) a wide range of sophisticated tandem (ion mobility) mass spectrometers can be easily adapted for operation with GC–API; and (iii) the conditions of an atmospheric pressure ion source can promote structure diagnostic ion–molecule reactions that are otherwise difficult to perform using conventional GC–MS instrumentation. This literature review addresses the merits of GC–API for nontargeted screening while summarizing recent applications using various GC–API techniques. One perceived drawback of GC–API is the paucity of spectral libraries that can be used to guide structure elucidation. Herein, novel data acquisition, deconvolution and spectral prediction tools will be reviewed. With continued development, it is anticipated that API may eventually supplant EI as the de facto GC–MS ion source used to identify unknowns.

Quantitative Analysis of Trace Water in Monosilane Gas Using Atmospheric-Pressure Ionization Mass Spectrometer with Bicompartment Ion Source

1995 ◽  
Vol 34 (Part 1, No. 12A) ◽  
pp. 6308-6313 ◽  
Author(s):  
Yasuhiro Mitsui ◽  
Takashi Irie ◽  
ShimpeiIijima ◽  
Kazuaki Mizokami ◽  
KeijiHasumi ◽  
...  
Keyword(s):  
Quantitative Analysis ◽  
Mass Spectrometer ◽  
Atmospheric Pressure ◽  
Ion Source ◽  
Ionization Mass ◽  
Atmospheric Pressure Ionization ◽  
Trace Water
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