An experimental study of ion-induced nucleation using a drift tube ion mobility spectrometer/mass spectrometer and a cluster-differential mobility analyzer/Faraday cup electrometer

Nagato, Kenkichi; Kim, Chan Soo; Adachi, Motoaki; Okuyama, Kikuo

doi:10.1016/j.jaerosci.2004.12.006

Cited by 31 publications

(15 citation statements)

References 26 publications

(30 reference statements)

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“…Subsequently, similar phenomenon was discovered in troposphere [23][24][25]. The distinction was the following: in troposphere, the most centers of nucleation were represented by the charged fragments of molecules of industrial contamination (nitric oxides, ammonia, sulphuric acid and so on).…”

Section: Water Nanodrops In Atmospherementioning

confidence: 73%

Nanoscale Liquid is Second Liquid

Mosienko¹

2012

Chemical Kinetics

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Section: Water Nanodrops In Atmospherementioning

confidence: 73%

Nanoscale Liquid is Second Liquid

Mosienko¹

2012

Chemical Kinetics

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“…1 shows the experimental arrangement used in the present study, the details of which have been described previously [18,21]. All measurements were conducted under room temperature.…”

Section: Methodsmentioning

confidence: 99%

“…To analyze the chemical kinetics involving SO 2 and the early stages of particle formation, we measured negative ion composition and the size distribution of charged particles as a function of H 2 O concentration. In our previous study, we developed a measurement system employing an ion mobility spectrometer/mass spectrometer (IMS/MS) and a nano-DMA for ions and charged particles generated by ionization in air [18]. We used this same system for the present study.…”

Section: Introductionmentioning

confidence: 99%

Charged particle formation by the ionization of air containing sulfur dioxide

Nagato

2009

International Journal of Mass Spectrometry

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“…31-5.53 Mev α + emitter) can also be used. Submitted for publication in special issue on IMS modeling and simulation and in the negative ion mode, the ionization sequence is [6,7] …”

Section: Introductionmentioning

confidence: 99%

Molecular modeling interpretation of IMMS data collected on negative ionization of methyl salicylate using radioactive, corona discharge and photo-ionization

Spangler¹

2015

Int. J. Ion Mobil. Spec.

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Except for electrospray ionization that was introduced later to handle biochemical analyses, the radioactive source has been the benchmark ionization source for ion mobility spectrometry. On the other hand, the licensing requirements accompanying the use of the source has created a desire to replace it with a nonradioactive source with an equivalent ionization capability. Two such sources are the discharge and photoionization sources that are capable of negatively ionizing the internally hydrogen bonded ketoB isomer of methyl salicylate. IMMS data show that if the negative reactant ions are NO 3 − ·HNO 3 (discharge source) or CO 3 − (doped photoionization source), methyl salicylate cannot be ionized. However when the sources are synchronously pulsed with a shutter grid, methyl salicylate can be ionized by the formation of the oxygen anion adduct, O 2 − ·M, similar to radioactive ionization. The ionization capability depends not only upon the partial concentration of oxygen in the immediate ionization region but also on the geometry used to construct the source. Molecular modeling shows that the UV radiation emitted by the sources will photodissociate the reactant ions that reconstitute as the energy of the UV radiation decreases during the pulsing cycle. The reconstitution of CO 3 − is delayed due to a change in geometric symmetry and is the first to leave the ionization region because of its high mobility. This allows methyl salicylate to be ionized by oxygen anions.

show abstract

An experimental study of ion-induced nucleation using a drift tube ion mobility spectrometer/mass spectrometer and a cluster-differential mobility analyzer/Faraday cup electrometer

Cited by 31 publications

References 26 publications

Nanoscale Liquid is Second Liquid

Nanoscale Liquid is Second Liquid

Charged particle formation by the ionization of air containing sulfur dioxide

Molecular modeling interpretation of IMMS data collected on negative ionization of methyl salicylate using radioactive, corona discharge and photo-ionization

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