Research →  MION2

MION2

Multi-scheme chemical ionization inlet
MION2 enables a comprehensive analysis of a broad range of chemical compounds present in the environment. This versatile inlet allows the customization of reagent ions to suit various specific applications. 

MION2 brings to the analysis:

Reagent ion and polarity switching in seconds
the injection of ions can be turned off quasi-instantaneously by controlling the electrode voltages

Possibility to use wide range of reagent ions
Br-, NO3-, C4H12N+, C3H7O+

Ionization at ambient pressure
prevents the dilution of a sample 
Only charged reagent ions are injected
into ion-molecule mixing region, preventing neutral reagent molecules from affecting the sample
‍
Sampling of ambient ions  
when voltages are turned off
‍
Negligible fragmentation
owing to soft adduct-forming ionization

Examples of reagent ions and compounds to be detected

Nitrate NO3-
Highly Oxygenated Organic Molecules,
Sulfuric Acid,
Iodine containing species,
Semi-Volatile Organic Compounds
Bromide Br-
Oxygenated Organic Molecules,
Sulfuric Acid,
Iodine containing species,
HO2 radicals,
Semi-Volatile Organic Compounds
Aminium C4H12N+
Less Oxygenated Organic Molecules

Resources

ChemRxiv: Introducing Multi-Pressure Chemical Ionization Mass Spectrometry

MPCIMS enables simultaneous detection of Volatile Organic Compounds and their oxidized reaction products within a single gas stream.
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Analytical Chemistry: Fast Polarity Switching of Chemical Ionization Orbitrap MS

The polarity switching MION-Orbitrap system is shown to be a versatile and powerful technique for the online analysis of a wide range of reactive trace species.
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AMT: Multiphysical description of chemical ionisation in MION2

A detailed comparison of two atmospheric pressure interface CIMS inlets: the MION2 inlet and the Eisele type inlet.
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Nature chemistry: The gas-phase formation mechanism of iodic acid as an atmospheric aerosol source

The missing mechanism from iodine sources to particle formation is discovered in the CLOUD chamber and confirmed by the field observations
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News

Multiphysical description of MION2 is published

21.11.2024
Research
A modelling study describing the MION2 and Eisele-type inlets has been accepted for publication in Atmospheric Measurement Techniques
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Register for the MION-Orbitrap workshop!

17.10.2024
Research
Karsa & ACTRIS CiGas are excited to announce that registration for the MION-Orbitrap workshop is now open!
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Karsa is heading to AAAR2024 next week!

15.10.2024
Research
Karsa will be an exhibitor at the 42nd Annual Conference organised by the American Association for Aerosol Research.
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