Naphthenic acids occur naturally in crude oils and in oil sands bitumens. They are toxic
components in refinery wastewaters and in oil sands extraction waters. In addition, there are …

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 …

Biodegradation of oils in nature is important in reservoirs cooler than approximately 80 C.
Oils from shallower, cooler reservoirs tend to be progressively more biodegraded than those …

Naphthenic acid corrosion is a major concern for the oil refinery business. While much is
now known about the phenomenon, it is still not completely understood because of the …

Quantitative analysis of separated carboxylic acid fractions of 33 crude oils from the UK, Italy
and California, showed that the carboxylic acid fraction is a major factor responsible for the …

We present the selective ionization, resolution and identification of acidic NSO compounds
in three crude oils of different geochemical origins by negative ion electrospray ionization …

The Athabasca oil sands in Canada are a less conventional source of oil which have seen
rapid development. There are concerns about the environmental impact, with particular …

Pyrolysis bio-oils are liquid products of lignocellulosic biomass pyrolysis. They have a highly
promising potential to be widely used, after an appropriate upgrade, as advanced biofuels …

Negative ion electrospray ionization (ESI) coupled with high field Fourier transform ion
cyclotron resonance mass spectrometry (FT-ICR-MS) allows for the direct detection of acidic …

Recent research has shown that the corrosivity of naphthenic acids is related to their
molecular mass and that the “total acid number”(TAN), traditionally used as an indicator of …