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Atmospheric pressure laser ionization (APLI) coupled with Fourier transform ion cyclotron resonance mass spectrometry applied to petroleum samples analysis: comparison with electrospray ionization and atmospheric pressure photoionization methods

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Panda,  Saroj Kumar
Service Department Schrader (MS), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Schrader,  Wolfgang
Service Department Schrader (MS), Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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Citation

Panda, S. K., Brockmann, K.-J., Benter, T., & Schrader, W. (2011). Atmospheric pressure laser ionization (APLI) coupled with Fourier transform ion cyclotron resonance mass spectrometry applied to petroleum samples analysis: comparison with electrospray ionization and atmospheric pressure photoionization methods. Rapid Communications in Mass Spectrometry, 25(16), 2317-2326. doi:10.1002/rcm.5122.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0014-C9C7-E
Abstract
The analysis of crude oil samples remains a tough challenge due to the complexity of the matrix and the broad range of physical and chemical properties of the various individual compounds present. In this work, atmospheric pressure laser ionization (APLI) is utilized as a complementary tool to other ionization techniques for crude oil analysis. Mass spectra obtained with electrospray ionization (ESI) and atmospheric pressure photoionization (APPI) are compared. APLI is primarily sensitive towards non-polar aromatic hydrocarbons, which are generally present in high amounts especially in heavy crude oil samples. The ionization mechanisms of APLI vs. APPI are further investigated. The results indicate the advantages of APLI over established methods like ESI and APPI. The application of APLI in combination with Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) is thus demonstrated to be a powerful tool for the analysis of aromatic species in complex crude oil fractions.