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Production and analysis of multiply charged negative ions by liquid atmospheric pressure matrix-assisted laser desorption/ionization mass spectrometry.

Oliver J Hale | Pavel Ryumin | Jeffery M Brown | Michael Morris | Rainer Cramer
Rapid communications in mass spectrometry : RCM | 2021

Liquid atmospheric pressure matrix-assisted laser desorption/ionisation (AP-MALDI) has been shown to enable the production of electrospray ionisation (ESI)-like multiply charged analyte ions with little sample consumption and long-lasting, robust ion yield for sensitive analysis by mass spectrometry (MS). Previous reports have focused on positive ion production. Here, we report an initial optimisation of liquid AP-MALDI for ESI-like negative ion production and its application to the analysis of peptides/proteins, DNA and lipids.

Pubmed ID: 30067883

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MassLynx (tool)

RRID:SCR_014271

Software which can acquire, analyze, manage, and share mass spectrometry data. MassLynx controls any Waters mass spectrometry system, from sample and solvent management components to mass spectrometer and auxiliary detectors. The software can acquire nominal mass, exact mass, MS/MS and exact mass MS/MS data. The software system also maintains and consolidates all user sample data. Optional Application Manager programs provide additional information for specific MS analyses and data.

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