Biofuel Analysis by GC, LC-MS, and HPLC
Biodiesel Magazine has recently posted an article that gives an overview of biodiesel test methods, which includes gas chromatography (GC), infrared spectrometry (IR), and inductively coupled plasma (ICP).
Biodiesel Magazine has recently posted an article that gives an overview of biodiesel test methods, which includes gas chromatography (GC), infrared spectrometry (IR), and inductively coupled plasma (ICP).
While IR and ICP have more to do with our sister publication Spectroscopy, Chromatography Online has several articles regarding the quality control and identification of blend levels by GC. We have published several application notes regarding the analysis of free and total glycerines in biodiesel, which can be found here and here.
We have also published an application notes on the liquid chromatography-mass spectrometry (LC-MS) analysis of biodiesel and the high performance liquid chromatography (HPLC) method that uses an evaporative light scattering detector as described in another note. These LC and HPLC are mentioned in the Biofuel Magazine's article which focuses on official EPA methods for the identification of biofuels.
Multi-Step Preparative LC–MS Workflow for Peptide Purification
March 21st 2025This article introduces a multi-step preparative purification workflow for synthetic peptides using liquid chromatography–mass spectrometry (LC–MS). The process involves optimizing separation conditions, scaling-up, fractionating, and confirming purity and recovery, using a single LC–MS system. High purity and recovery rates for synthetic peptides such as parathormone (PTH) are achieved. The method allows efficient purification and accurate confirmation of peptide synthesis and is suitable for handling complex preparative purification tasks.
