01:07Low-energy Water-accommodated Fraction (LEWAF) Sample Preparation and Photoirradiation
03:37Fourier Transform–Ion Cyclotron Resonance Mass Spectrometry (FT-ICR MS) and Trapped Ion Mobility Spectrometry (TIMS) with Atmospheric Pressure Laser Ionization (APLI)
05:47Results: Analysis of LEWAF Composition by TIMS-FT-ICR MS with APLI
The low-energy water-accommodated fraction (LEWAF) of crude oil is a challenging system to analyze, because over time, this complex mixture undergoes chemical transformations. This protocol illustrates methods for the preparation of the LEWAF sample and for performing photo-irradiation and chemical analysis by trapped ion mobility spectrometry–FT-ICR MS.