Easy to assemble dielectric barrier discharge plasma ionization source based on printed circuit boards

Hitzemann, Moritz; Schaefer, Christoph; Kirk, Ansgar T.; Nitschke, Alexander; Lippmann, Martin; Zimmermann, Stefan

doi:10.1016/j.aca.2022.340649

Cited by 3 publications

(2 citation statements)

References 51 publications

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“…By applying a high AC voltage to the electrodes, the plasma is ignited within the capillary. Further, a detailed description of the plasma ionization source is given elsewhere . The plasma source generates gas-phase reactant ions that are directed via a gas flow into the desolvation region for possible additional CI of analytes.…”

Section: Methodsmentioning

confidence: 99%

Regarding the Influence of Additives and Additional Plasma-Induced Chemical Ionization on Adduct Formation in ESI/IMS/MS

Thoben

Hartner

Hitzemann

et al. 2023

J. Am. Soc. Mass Spectrom.

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Ion mobility spectrometers (IMS) separate ions based on their ion mobility, which depends mainly on collision cross-section, mass, and charge of the ions. However, the performance is often hampered in electrospray ionization (ESI) by the appearance of multiple ion mobility peaks in the spectrum for the same analyte due to clustering and additional sodium adducts. In this work, we investigate the influence of solvents and buffer additives on the detected ion mobility peaks using ESI. Additionally, we investigate the effects of an additional chemical ionization (CI) induced by plasma ionization on the ions formed by electrospray. For this purpose, we coupled our high-resolution IMS with a resolving power of R p = 100 to a time-of-flight mass spectrometer. Depending on the analyte and the chosen additives, the ionization process can be influenced during the electrospray process. For the herbicide isoproturon, the addition of 5 mM sodium acetate results in the formation of the sodium adduct [M + Na]+, which is reflected in the ion mobility K 0 of 1.22 cm2/(V·s). In contrast, the addition of 5 mM ammonium acetate yields the protonated species [M + H]+ and a correspondingly higher K 0 of 1.29 cm2/(V·s). In some cases, as with the herbicide pyrimethanil, the addition of sodium acetate can completely suppress ionizations. By carefully choosing the solvent additive for ESI-IMS or additional CI, the formation of different ion mobility peaks can be observed. This can facilitate the assignment of ions to ion mobility peaks using IMS as a compact, stand-alone instrument, e.g., for on-site analysis.

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Section: Methodsmentioning

confidence: 99%

Regarding the Influence of Additives and Additional Plasma-Induced Chemical Ionization on Adduct Formation in ESI/IMS/MS

Thoben

Hartner

Hitzemann

et al. 2023

J. Am. Soc. Mass Spectrom.

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“…However, radioactive ionization sources present issues of storage, transport, and disposal because of radiation safety issues. Thus, nonradioactive ionization sources are more favored, such as a corona discharge ionization source, ,, a dielectric barrier discharge ionization source, − and an ultraviolet (UV) photoionization source. − In this paper, a 14 × 6 mm UV lamp is being used as an ionization source.…”

Section: Fast Polarity Switching Fourier Deconvolution Imsmentioning

confidence: 99%

Implementing of Fourier Deconvolution Multiplexing to Fast Polarity Switching Miniaturized Ion Mobility Spectrometer

Yang,

Ye,

et al. 2024

Anal. Chem.

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Ion mobility spectrometry (IMS) is a reliable and sensitive technique for the detection and analysis of compounds at the trace level. Depending on the chemical composition of the sample, compounds may be positively or negatively charged to form different polarity ions and detected in positive or negative polarity of the electric field. In order to detect multiple threats simultaneously with miniaturized devices, using a single detection unit to achieve high resolving power and high sensitivity is important. In this work, a miniaturized drift tube with fast polarity switching capabilities integrated with Fourier deconvolution multiplexing techniques is proposed for the first time as a means to improve the performance of ion mobility spectrometry. The sensitivity and resolving power are improved compared to traditional polarity switching signal averaging data acquisition methods. The displayed device had a high resolving power up to 52 at a drift length of 41 mm and a drift tube voltage of 2 kV. Trinitrotoluene (TNT), methamphetamine (MA), benzene, toluene, methyl tert-butyl ether (MTBE), acetic acid, and methylene chloride were evaluated using the proposed fast polarity switching multiplexing spectrometer and exhibited satisfied performance.

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Artificial intelligence for experimental investigation and optimal process parameter selection in PM-EDM of nimonic alloy 901

Penmetsa,

Ilanko

2023

Journal of Engineering Research

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Easy to assemble dielectric barrier discharge plasma ionization source based on printed circuit boards

Cited by 3 publications

References 51 publications

Regarding the Influence of Additives and Additional Plasma-Induced Chemical Ionization on Adduct Formation in ESI/IMS/MS

Regarding the Influence of Additives and Additional Plasma-Induced Chemical Ionization on Adduct Formation in ESI/IMS/MS

Implementing of Fourier Deconvolution Multiplexing to Fast Polarity Switching Miniaturized Ion Mobility Spectrometer

Artificial intelligence for experimental investigation and optimal process parameter selection in PM-EDM of nimonic alloy 901

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