Quantitative analysis of free glycerol in biodiesel using solid-phase extraction and high-performance liquid chromatography

Production, optimization, and characterization of Ethiopian variant Prosopis juliflora based biodiesel

“…The maceration or breaking up of the oil from the hard powder seedpod was done using each separate container by increasing agitation time Maceration is a remedy prepared by soaking plant material in vegetable oil, chemical, or water to separate oils in it from the plant material [ 62 ]. The process of maceration makes the material soft.…”

Electrochemical Biosensor Based on Chitosan- and Thioctic-Acid-Modified Nanoporous Gold Co-Immobilization Enzyme for Glycerol Determination

“…Various analytical methods for the detection and quantification of glycerol have been proposed, which include gas chromatography [6], liquid chromatography [7], spectrophotometric [8] and enzymatic methods [9], etc. Unfortunately, most of the conventional methods have the disadvantage of high cost, time-consuming, tedious pre-treatment as well as the need for trained personnel [9,10].…”

Hyphenating temperature gradient elution with refractive index detection through temperature-responsive liquid chromatography

“…It is particularly broadly applied in reversed phase LC where it is also characterized by fast and reproducible column regeneration [1]. While solvent gradient analysis is combinable with many common detectors for HPLC (UV, mass spectrometry, evaporative light scattering detection, fluorescence detection) it is however not compatible with refractive index detection (RID) [2][3][4]. This is unfortunate because between the many HPLC detectors it approaches in the closest way the ideal of universal detection, through which idyllically the response is identical for any analyzed solute [5].…”