The influence of different types of reactant ions on the ionization behavior of polycyclic aromatic hydrocarbons in corona discharge ion mobility spectrometry

Son, Chae Eun; Choi, Sung‐Seen

doi:10.1002/rcm.8936

Cited by 6 publications

(3 citation statements)

References 66 publications

(79 reference statements)

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“…Ion mobility spectrometry (IMS) has been widely used for the detection of hazardous materials such as explosives, drugs, chemical warfare agents, and polycyclic aromatic hydrocarbons; it involves the use of large laboratory instruments, portable analyzers, or on-site detectors. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] IMS is also one of the most widely used methods for detecting explosives in the field such as airport security checks.…”

Section: Introductionmentioning

confidence: 99%

Test method for vapor collection and ion mobility detection of explosives with low vapor pressure

Son,

Choi,

Choi

2023

Rapid Comm Mass Spectrometry

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RationaleIon mobility spectrometry (IMS) has been widely used for on‐site detection of explosives. Air sampling method is applicable only when the concentration of explosive vapor is considerably high in the air, but vapor pressures of common explosives such as 2,4,6‐trinitrotoluene (TNT), 1,3,5‐trinitro‐1,3,5‐triazacyclohexane (RDX), and pentaerythritol tetranitrate (PETN) are very low. A test method for analyzing the vapor detection efficiency of explosives with low vapor pressure via IMS was developed using artificial vapor and collection matrices.MethodsArtificial explosive vapor was produced by spraying an explosive solution in acetone. Fifteen collection matrices of various materials with woven or nonwoven structures were tested. Two arrangements of horizontal and vertical positions of the collection matrices were employed. Explosive vapor collected in the matrix was analyzed using IMS.ResultsOnly three collection matrices of stainless steel mesh (SSM), polytetrafluoroethylene sheet (PFS), and lens cleansing paper (LCP) showed the TNT and/or RDX ion peaks at an explosive vapor concentration of 49 ng/L. There was no collection matrix to detect PETN vapor at or lower than 49 ng/L. For the PFS, TNT and RDX were detected at a vapor concentration of 49 ng/L. For the LCP, TNT and RDX were detected at vapor concentrations of 14 and 49 ng/L, irrespectively.ConclusionsThe difference in the explosive vapor detection efficiencies could be explained by the adsorption and desorption capabilities of the collection matrices. The proposed method can be used for evaluating the vapor detection efficiency of hazardous materials with low vapor pressure.

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Section: Introductionmentioning

confidence: 99%

Test method for vapor collection and ion mobility detection of explosives with low vapor pressure

Son,

Choi,

Choi

2023

Rapid Comm Mass Spectrometry

Self Cite

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“…Ion mobility spectrometry (IMS) has been widely used for the detection of hazardous materials such as explosives, drugs, chemical warfare agents, and polycyclic aromatic hydrocarbons (PAHs); it involves the use of large laboratory instruments, portable analyzers, or on-site detectors. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17] IMS is also one of the most widely used methods for detecting explosives in the field such as airport security checks. Various sampling methods for explosive detection via IMS have been reported.…”

Section: Introductionmentioning

confidence: 99%

Test method for vapor collection and ion mobility detection of explosives with low vapor pressure

Choi

Son

Choi

2022

Preprint

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Rationale: IMS has been widely used for the on-site detection of explosives. Air sampling method is applicable only when the concentration of explosive vapor is considerably high in the air, but vapor pressures of common explosives such as TNT, RDX, and PETN are very low. A test method for analyzing the vapor detection efficiency of explosives with low vapor pressure via IMS was developed using artificial vapor and collection matrices. Methods: Artificial explosive vapor was produced by spraying an explosive solution in acetone. Fifteen collection matrices of various materials with woven or nonwoven structure were tested. Two arrangements of horizontal and vertical positions of the collection matrices were employed. Explosive vapor collected in the matrix was analyzed through IMS. Results: Only three collection matrices of stainless steel mesh (SSM), polytetrafluoroethylene sheet (PFS), and lens cleansing paper (LCP) showed the TNT and/or RDX ion peaks at explosive vapor concentration of 49 ng/L. There was no collection matrix to detect PETN vapor at lower than 49 ng/L. For the PFS, TNT and RDX were detected at 49 ng/L vapor concentration. For the LCP, TNT and RDX were detected at vapor concentrations of 14 and 49 ng/L, irrespectively. Conclusions: The difference in the explosive vapor detection efficiencies could be explained by the adsorption and desorption capabilities of the collection matrices. The proposed method can be used for evaluating the vapor detection efficiency of hazardous materials with low vapor pressure.

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“…6 Nowadays, the ionization sources based on low temperature plasma (LTP) have the advantages of high ionization efficiency and no selectivity. 7 A large number of LTP ionization sources have been designed based on glow discharge, 8 corona discharge, 9 dielectric barrier discharge (DBD), 10 etc. for the detection of liquid or solid samples and gaseous samples.…”

Section: Introductionmentioning

confidence: 99%

Hollow electrode capillary plasma ionization source for rapid online detection of gaseous samples

Shen

Zhang

et al. 2021

Rapid Comm Mass Spectrometry

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RATIONALE Gas chromatography mass spectrometry (GC‐MS) with electron ionization (EI) is the most widely used analysis technique of gaseous samples, but it may be time‐consuming for online monitoring of mixtures whose concentrations relatively change rapidly. On the contrary, current ionization methods, such as chemical ionization (CI) and proton transfer reaction (PTR), also have some disadvantages such as selectivity. Therefore, appropriate soft ionization sources are searched for rapid online detection. METHODS Hollow electrode capillary plasma ionization (HECPI) is based on single electrode plasma. A hollow capillary was placed as both the electrode and the inlet of the gaseous samples. The ionization source is coupled with a mass spectrometer for performance evaluation. RESULTS Several typical compounds have been tested with HECPI‐mass spectrometer. In this process, the dominant ion peaks of all compounds can be indexed as molecular ion peaks, and the product ions of HECPI are less than that of dielectric barrier discharge ionization (DBDI). Three gaseous samples (linalool, triethylamine, and styrene) with various concentrations have been used to further confirm the performance of this source, and the detection limit of linalool is as low as 10 ppb. CONCLUSIONS HECPI is simple in structure and shows good performance. The results also show that HECPI has the potential to be an effective tool for detecting online gaseous samples rapidly.

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The influence of different types of reactant ions on the ionization behavior of polycyclic aromatic hydrocarbons in corona discharge ion mobility spectrometry

Cited by 6 publications

References 66 publications

Test method for vapor collection and ion mobility detection of explosives with low vapor pressure

Test method for vapor collection and ion mobility detection of explosives with low vapor pressure

Test method for vapor collection and ion mobility detection of explosives with low vapor pressure

Hollow electrode capillary plasma ionization source for rapid online detection of gaseous samples

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