RATIONALE: Two-dimensional mass spectrometry (2D MS) is a technique that correlates precursor and product ions in a sample without requiring prior ion isolation. Until now, this technique has only been implemented on Fourier transform ion cyclotron resonance mass spectrometers. By coupling 2D MS techniques in linear ion traps (LITs) with a mass analyser with a fast duty cycle (e.g. time-of-flight), data-independent tandem mass spectrometry techniques can be compatible on a liquid chromatography (LC) or gas chromatography (GC) timescale. METHODS: The feasibility of 2D MS in a LIT is explored using SIMION ion trajectory calculations. RESULTS: By applying stored waveform inverse Fourier transform techniques for radial excitation on a LIT, the sizes of ion clouds were found to be modulated according to the ions' resonant frequencies in the LIT. By simulating a laser-based fragmentation at the centre of the LIT after the radius modulation step, product ion abundances were found to be modulated according to the resonant frequency of their precursor. CONCLUSIONS: A 2D mass spectrum could be obtained using the results from the simulation. This in silico model shows the feasibility of 2D MS on a LIT. 2D MS in a LIT allows for tandem mass spectrometry without ion isolation.
RATIONALE: Two-dimensional mass spectrometry (2D MS) is a technique that correlates precursor and product ions in a sample without requiring prior ion isolation. Until now, this technique has only been implemented on Fourier transform ion cyclotron resonance mass spectrometers. By coupling 2D MS techniques in linear ion traps (LITs) with a mass analyser with a fast duty cycle (e.g. time-of-flight), data-independent tandem mass spectrometry techniques can be compatible on a liquid chromatography (LC) or gas chromatography (GC) timescale. METHODS: The feasibility of 2D MS in a LIT is explored using SIMION ion trajectory calculations. RESULTS: By applying stored waveform inverse Fourier transform techniques for radial excitation on a LIT, the sizes of ion clouds were found to be modulated according to the ions' resonant frequencies in the LIT. By simulating a laser-based fragmentation at the centre of the LIT after the radius modulation step, product ion abundances were found to be modulated according to the resonant frequency of their precursor. CONCLUSIONS: A 2D mass spectrum could be obtained using the results from the simulation. This in silico model shows the feasibility of 2D MS on a LIT. 2D MS in a LIT allows for tandem mass spectrometry without ion isolation.
Authors: Federico Floris; Maria A van Agthoven; Lionel Chiron; Christopher A Wootton; Pui Yiu Yuko Lam; Mark P Barrow; Marc-André Delsuc; Peter B O'Connor Journal: J Am Soc Mass Spectrom Date: 2017-10-03 Impact factor: 3.109
Authors: Maria A van Agthoven; Yuko P Y Lam; Peter B O'Connor; Christian Rolando; Marc-André Delsuc Journal: Eur Biophys J Date: 2019-03-13 Impact factor: 1.733
Authors: Maria A van Agthoven; David P A Kilgour; Alice M Lynch; Mark P Barrow; Tomos E Morgan; Christopher A Wootton; Lionel Chiron; Marc-André Delsuc; Peter B O'Connor Journal: J Am Soc Mass Spectrom Date: 2019-10-15 Impact factor: 3.109
Authors: Federico Floris; Lionel Chiron; Alice M Lynch; Mark P Barrow; Marc-André Delsuc; Peter B O'Connor Journal: J Am Soc Mass Spectrom Date: 2018-06-04 Impact factor: 3.109