Related Experiment Video
Updated: Jun 7, 2025

Preparation of Human Tissues Embedded in Optimal Cutting Temperature Compound for Mass Spectrometry Analysis
Published on: April 27, 2021
Optimizing conditions in online RPLC × SFC for the analysis of complex samples containing neutral compounds: Solving
Jason Devaux1, Mélanie Mignot2, Morgan Sarrut3
1COBRA, Normandie Université, Université de Rouen, INSA de Rouen, CNRS, UMR 6014, IRCOF 1 rue Tesnière, Mont Saint Aignan 76821, France; Université de Lyon, Institut des Sciences Analytiques, UMR 5280 CNRS, 5 rue de la Doua, Villeurbanne 69100, France; International Joint Laboratory, iC2MC: Complex Matrices Molecular Characterization, TRTG, BP 27, Harfleur 76700, France.
Optimizing online reversed-phase liquid chromatography and supercritical fluid chromatography (RPLC × SFC) enhances complex sample analysis. Key parameters like mobile phase composition and injection volume were identified for improved peak shape and separation power.
Area of Science:
- Analytical Chemistry
- Chromatography
Background:
- Online RPLC × SFC offers complementary separation for neutral compounds.
- Challenges exist in online RPLC × SFC due to hydro-organic solvents from RPLC acting as injection solvent in SFC.
Purpose of the Study:
- To identify and optimize key experimental parameters for improved peak shape in online RPLC × SFC.
- To establish suitable conditions for the online RPLC × SFC analysis of complex samples.
Main Methods:
- Systematic investigation of experimental parameters affecting peak shape in online RPLC × SFC.
- Evaluation of organic modifiers, co-solvents, gradient conditions, column IDs, valve configuration, and injection volume.
- Application of optimized conditions to microalgae bio-oil samples.
Main Results:
- Identified critical parameters: RPLC organic modifier (acetonitrile), SFC co-solvent (ACN/MeOH 50/50), SFC initial composition (≥5% B), SFC column ID (2.1 mm), RPLC column ID (1.0 mm), and maximized injection volume.
- Flushing interface loops with CO2 and adding co-solvent post-valve proved effective.
- Achieved symmetrical peaks and high separation power for microalgae bio-oil samples.
Conclusions:
- Established optimal conditions for online RPLC × SFC, overcoming challenges of hydro-organic solvent injection.
- Demonstrated the successful application of the optimized online RPLC × SFC method for complex sample analysis.
- The optimized method provides high separation power for characterizing samples like microalgae bio-oil.
More Related Videos
11:00Untargeted Metabolomics from Biological Sources Using Ultraperformance Liquid Chromatography-High Resolution Mass Spectrometry UPLC-HRMS
Published on: May 20, 2013
11:25Multi-step Preparation Technique to Recover Multiple Metabolite Compound Classes for In-depth and Informative Metabolomic Analysis
Published on: July 11, 2014
Related Concept Videos
High-Performance Liquid Chromatography: Elution Process
Gas Chromatography: Sample Injection Systems
Two primary injection methods are used...
Optimizing Chromatographic Separations
Band broadening refers to spreading solute bands as they travel through the column. This broadening can impact resolution. Plate height (H) represents the length required for one theoretical plate. A lower plate height corresponds to...
High-Performance Liquid Chromatography: Introduction
In HPLC, two phases play a critical role in the separation process:
Supercritical Fluid Chromatography
SFC utilizes a supercritical fluid mobile phase,...
High-Performance Liquid Chromatography: Instrumentation