Development of a Remote-from-Plasma Dielectric Barrier Discharge Ion Source and Its Application to Explosives

Hiraoka, Kenzo; Chen, Lee Chuin; Iwama, Takashi; Mandal, Mridul Kanti; Ninomiya, Satoshi; Suzuki, Hiroaki; Ariyada, Osamu; Furuya, Hiroko; Takekawa, Kenichi

doi:10.5702/massspec.58.215

Cited by 17 publications

(15 citation statements)

References 14 publications

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“…4,5) In this ion source, the desorbed molecules were not exposed to the plasma but were ionized mainly by H 3 O + and its water clusters H 3 O + (H 2 O) n produced outside of the DBD alumina tube. at is, the present DBD ion source may be regarded as an APCI ion source.…”

Section: Flash Surface Heating/rapid Coolingmentioning

confidence: 99%

Desorption in Mass Spectrometry

et al. 2017

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In mass spectrometry, analytes must be released in the gas phase. ere are two representative methods for the gasi cation of the condensed samples, i.e., ablation and desorption. While ablation is based on the explosion induced by the energy accumulated in the condensed matrix, desorption is a single molecular process taking place on the surface. In this paper, desorption methods for mass spectrometry developed in our laboratory: ash heating/rapid cooling, Leidenfrost phenomenon-assisted thermal desorption (LPTD), solid/solid friction, liquid/solid friction, electrospray droplet impact (EDI) ionization/desorption, and probe electrospray ionization (PESI), will be described. All the methods are concerned with the surface and interface phenomena. e concept of how to desorb less-volatility compounds from the surface will be discussed.Copyright © 2017 Dilshadbek Tursunbayevich Usmanov, Satoshi Ninomiya, Lee Chuin Chen, Subhrakanti Saha, Mridul Kanti Mandal, Yuji Sakai, Rio Takaishi, Ahsan Habib, Kenzo Hiraoka, Kentaro Yoshimura, Sen Takeda, Hiroshi Wada, and Hiroshi Nonami. is is an open access article distributed under the terms of Creative Commons Attribution License, which permits use, distribution, and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.Please cite this article as: Mass Spectrom (Tokyo) 2017; 6(2): S0059 Keywords: desorption, ablation, thermal desorption, Leidenfrost phenomenon, ash heating, electrospray droplet impact ionization, probe electrospray ionization (Received September 20, 2016; Accepted January 4, 2017) RATIONALE: ABLATION VS. DESORPTION e two technical terms, ablation and desorption, should be distinguished rigorously. As shown in Fig. 1, ablation is induced by explosion of the matrix or substrate whereas desorption is a single molecular event, i.e., detachment of a single molecule from the surface. e antonym of desorption is adsorption.In matrix assisted laser desorption/ionization (MALDI), for example, the photon energy is ultimately converted to thermal energy and ablation of the matrix takes place above the critical laser power (Fig. 1(a)). In ablation, the ablated materials are mainly composed of aggregates. us the ions observed in MALDI are only a small part of materials ablated. In this respect, MALDI is more likely matrixassisted laser "ablation" ionization. In secondary ion mass spectrometry (SIMS), primary projectiles such as Ar, and (Ar) n + are used. In SIMS using atomic ion projectiles, the sputtering is caused by the cascade collisions in the sample. us the useful yield de ned as [total gas phase ions detected] divided by [total amount of sample sputtered] is rather low. e small useful yields for MALDI and SIMS (10 −5 -10) originate from the fact that photons or primary beams penetrate into the target materials leading to the sputtering of the substrate. In contrast, the useful yield for desorption-based techniques could be much higher than MALDI and SIMS if the desorbed molecules are ionized by high-e cien...

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Section: Flash Surface Heating/rapid Coolingmentioning

confidence: 99%

Desorption in Mass Spectrometry

et al. 2017

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“…An impressive example of the power of LTP-MS is the non-destructive analysis of Chinese works of art. [13] Other applications of LTP-MS include forensic analyses, [18,19] detection of explosives, [17,20] and the quality control of food. [12,15] The combination of the parameters of the electric circuit and the mechanical design of a plasma device determines the properties of the plasma beam.…”

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Design of a low‐temperature plasma (LTP) probe with adjustable output temperature and variable beam diameter for the direct detection of organic molecules

Martínez‐Jarquín

Winkler

2013

Rapid Comm Mass Spectrometry

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“…Ionization methods using a dielectric barrier discharge (DBD) have been attracting considerable interest . Since Zhang et al .…”

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“…Since Zhang et al . reported the application of DBD ionization to mass spectrometry, several ionization methods using the DBD have been reported, such as the low‐temperature plasma probe, the remote form plasma DBD ion source, and the DBD ionization source …”

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