Biodiesel Solutions

Introduction to Biodiesel

Eliminate Column Breakage in High Temperature Biodiesel Analysis

Using metal columns to analyze glycerides in biodiesel offer significant performance advantages compared to fused silica columns, as shown in this evaluation.

High Temp. Stability Problem Solved with New Metal Columns Analysis of Total Glycerides in Biodiesel Oils by ASTM D-6584 Using New MXT^®-Biodiesel TG Capillary Columns

The high temperatures required for biodiesel analysis by gas chromatography present a considerable challenge to analytical columns. Fused silica columns, even those rated for high-temperature tolerance, breakdown relatively quickly. Restek’s new MXT^®-Biodiesel columns are more stable up to 430°C and offer excellent chromatography for glycerides. These columns are available in two configurations: factory-coupled to a 0.53mm retention gap, or with a built-in, leak-proof Integra-Gap™ retention gap.

Fast, Accurate FAMEs Analyses of Biodiesel Fuel Using a Stabilwax^® Capillary GC Column

As biodiesel fuel continues to stimulate interest worldwide as an energy source, several gas chromatographic methods have been developed to determine the quality of B100 fuel. Here we show excellent peak symmetry, resolution, and reproducibility for determining the fatty acid methyl ester (FAME) and linolenic acid methyl ester content in B100 biodiesel fuel, using European standard method EN 14103 on a Stabilwax^® fused silica GC column.

Biodiesel Analysis by European Methodology Exceptional Peak Symmetry, Using an Rtx^®Biodiesel GC Column

Glycerin is a notoriously difficult challenge in GC, particularly at the levels involved in biodiesel oil analysis, but an Rtx^®-Biodiesel column provides a symmetric peak that makes quantification easier and more reliable. The column performs well at elevated temperatures: peaks for glycerin and glycerides exhibit minimal tailing, and bleed is low at 370°C, as specified in European method DIN EN14105.

Analyze Biodiesel Oil for Glycerin Using Restek's Robust Rtx^®-Biodiesel Capillary GC Column

We challenged our Rtx^®-Biodiesel column with analysis for glycerin in biodiesel according to method ASTM D-6584-00. Excellent linearity was established for glycerin, triolein, monolein, and diolein, with r² values exceeding the method criteria for all compounds. Mono-, di-, and triglycerides resolved well from other compounds in B100 biodiesel oil. Column performance was strong at high temperatures, with low bleed even at 380°C. An Alumaseal™ connector and guard column were used to extend column life.