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

Chemical characterization of petroleum is a challenging task due to its inherently complex
nature. For example, crude oil is believed to have as many or more compounds than the …

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 …

With the development of the petrochemical industry, a large amount of naphthenic acids in
petrochemical wastewater was accumulated in the environment, causing serious …

Given the ill-defined term “naphthenic acids”(NAs), we will classify NAs as the carboxylic
acids found naturally in crude oil, which include both classic NAs (c-NAs, monoacids) and ox …

252 literature sources and about 5000 crude oil assays were reviewed in this work. The
review has shown that the petroleum characterization can be classified in three categories …

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 …

Bio-oils of pine wood and sugarcane bagasse were obtained in different conditions of
thermal and catalytic pyrolysis. They were analyzed by hydrogen nuclear magnetic …

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 …