Technical lignins from various sources can be converted into bio-oil with a low O/C ratio by pyrolysis in the presence of formic acid and an alcohol. By application of different analytical techniques, such as Fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance (NMR), electrospray ionization mass spectrometry (ESI-MS), and size-exclusion chromatography (SEC), it has been …
A novel method for “chemical fingerprinting”, originally developed for oil and petroleum products, has been applied to biodiesel. The method is based on electrospray mass spectrometry (ESI-MS), efficient data processing, and multivariate data analysis (chemometrics). The method was applied on biodiesel from rapeseed (three different), palm, soybean, used frying, recycled vegetable, and s…