Determination of residence times of ions in a resistive glass selected ion flow-drift tube using the Hadamard transformation

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F15%3A10319616" target="_blank" >RIV/00216208:11320/15:10319616 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/61388955:_____/15:00446322

Výsledek na webu

<a href="http://dx.doi.org/10.1002/rcm.7254" target="_blank" >http://dx.doi.org/10.1002/rcm.7254</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/rcm.7254" target="_blank" >10.1002/rcm.7254</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Determination of residence times of ions in a resistive glass selected ion flow-drift tube using the Hadamard transformation

Popis výsledku v původním jazyce

RATIONALE: Selected ion flow tube mass spectrometry, SIFT-MS, used for trace gas analyses has certain fundamental limitations that could be alleviated by adding a facility that allows reaction times and ion interaction energies to be varied. Thus, a selected ion flow-drift tube, SIFDT, has been created to explore the influence of an embedded electric field on these parameters and on reaction processes. METHODS: The new SIFTD instrument was constructed using a miniature resistive glass drift tube. Arrival times of ions, t, analysed by a downstream quadrupole mass spectrometer over the m/z range 10-100 were studied by modulating the injected ion current using a gate lens. Single pulse modulation was compared with pseudorandom time multiplexing exploiting the Hadamard transformation. A simple model involving analysis of ethanol and water vapour mixture in air was used to explore the advantages of the SIFDT concept to SIFT-MS analysis. RESULTS: It is shown that the resistive glass drift tube is suitable for SIFDT experiments. The Hadamard transformation can be used to routinely determine reagent ion residence time in the flow-drift tube and also to observe differences in arrival times for different product ions. Two-dimensional data combining arrival time and mass spectra can be obtained rapidly. The calculated ion drift velocities vary with the reduced field strength, E/N, and the calculated ion mobilities agree with theoretical and previous literature values. CONCLUSIONS: This study has provided evidence that the SIFDT-MS technique can be implemented in a miniature and low-cost instrument and two-or three-dimensional data can be obtained (product ion count rates as functions of m/z, t and E/N) using the Hadamard transformation thus providing exciting possibilities for further analytical additions and extensions of the SIFT-MS technique.

Název v anglickém jazyce

Determination of residence times of ions in a resistive glass selected ion flow-drift tube using the Hadamard transformation

Popis výsledku anglicky

RATIONALE: Selected ion flow tube mass spectrometry, SIFT-MS, used for trace gas analyses has certain fundamental limitations that could be alleviated by adding a facility that allows reaction times and ion interaction energies to be varied. Thus, a selected ion flow-drift tube, SIFDT, has been created to explore the influence of an embedded electric field on these parameters and on reaction processes. METHODS: The new SIFTD instrument was constructed using a miniature resistive glass drift tube. Arrival times of ions, t, analysed by a downstream quadrupole mass spectrometer over the m/z range 10-100 were studied by modulating the injected ion current using a gate lens. Single pulse modulation was compared with pseudorandom time multiplexing exploiting the Hadamard transformation. A simple model involving analysis of ethanol and water vapour mixture in air was used to explore the advantages of the SIFDT concept to SIFT-MS analysis. RESULTS: It is shown that the resistive glass drift tube is suitable for SIFDT experiments. The Hadamard transformation can be used to routinely determine reagent ion residence time in the flow-drift tube and also to observe differences in arrival times for different product ions. Two-dimensional data combining arrival time and mass spectra can be obtained rapidly. The calculated ion drift velocities vary with the reduced field strength, E/N, and the calculated ion mobilities agree with theoretical and previous literature values. CONCLUSIONS: This study has provided evidence that the SIFDT-MS technique can be implemented in a miniature and low-cost instrument and two-or three-dimensional data can be obtained (product ion count rates as functions of m/z, t and E/N) using the Hadamard transformation thus providing exciting possibilities for further analytical additions and extensions of the SIFT-MS technique.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

<a href="/cs/project/GA13-28882S" target="_blank" >GA13-28882S: Excitace, separace a fragmentace iontů v driftovém poli v SIFT-MS pro okamžitou selektivní kvantifikaci stopových plynů</a><br>

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Rapid Communications in Mass Spectrometry

ISSN

0951-4198

e-ISSN

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Svazek periodika

29

Číslo periodika v rámci svazku

17

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

8

Strana od-do

1563-1570

Kód UT WoS článku

000360761300003

EID výsledku v databázi Scopus

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