There has been a recent surge in the development of mass spectrometric methods for
detailed characterization of naphthenic acid fraction compounds (all CcHhNnOoSs, species …

The long-term use of anti-inflammatory drugs is the most common cause of gastric ulcer
disease, one of the major gastrointestinal disorders affecting people worldwide. Persea …

Molecular composition analysis of petroleum and alternative fuels has been considered as
one of the greatest challenges in analytical chemistry. The rapid development of Fourier …

Although the term “naphthenic acids” was originally used to describe acids that contain
naphthenic rings, today this term is used in a more general sense and refers to all cyclic …

Asphaltenes can be considered like the 'bad guys 'when heavy petroleum are transported or
upgraded. These compounds are not classified by the their chemical structures but by the …

Naphthenic (NAP) acids have been previously characterized by negative electrospray
ionization (ESI) Fourier transform ion cyclotron resonance mass spectrometry (FT-ICR MS) …

Asphaltenes analysis still remains a challenge due to their unknown molecular structure and
self-associative behavior. FT-ICR MS analyses using five different ionization methods, ESI …

In this work, electrospray ionization Fourier transform ion cyclotron resonance mass
spectrometry (ESI (±)-FT-ICR MS) was applied in the chemical characterization of polar …

Bio-oils were obtained from the flash-pyrolysis of empty palm fruit bunch and pine wood
chips. They were analyzed by negative-ion electrospray ionization Fourier transform ion …

The analysis of hydrocarbon using atmospheric or ambient ionization techniques still
remains a challenge in mass spectrometry. Traditionally, the ionization occurs via …