E. Gilgenast

TL;DR: Individual steps of the procedures used in sample preparation, including sample collection from the environment or from tissue cultures, drying, comminution, homogenization, leaching, extraction, distillation and condensation, analyte enrichment, and obtaining the final extracts for chromatographic analysis are discussed.

TL;DR: The results show the potential of Droseraceae plants grown in vitro as a source of pharmaceutical material with valuable antimicrobial properties, including naphthoquinones and flavonoids.

TL;DR: A modification of methods EN-12916/ASTM D-6591 that provides a simultaneous determination of individual groups of aromatic hydrocarbons, total content of polycyclic aromatic Hydrocarbons and the FAME content in diesel fuels is described.

TL;DR: A novel method of sample preparation for the determination of trace concentrations of polycyclic aromatic hydrocarbons (PAHs) in high-boiling petroleum products is described and the use of internal standard allows quantitative results to be corrected for the degree of recovery of PAHs during the sample preparation step.

TL;DR: In this article, a critical analysis of current knowledge about the use of high-performance liquid chromatography (HPLC) in the analysis of group-type composition of petroleum products of different volatility and the possibilities of HPLC employment for technical and process analysis in the petrochemical-refining industry and related industries is presented.