This application note compares a 1-D and 2-D HPLC separation coupled to MS for proteome analysis and finds that the 2-D method identifies 30% more proteins. (Grace Vydac)
In-Loop Analyte Degradation in Two-Dimensional Liquid Chromatography: Example and Solutions
September 13th 2024In this installment of “LC Troubleshooting,” we describe an artifact that can arise because of compound degradation during the transfer of fractions of the first dimension (1D) column effluent to the 2D separation.
Next Generation Peak Fitting for Separations
July 9th 2024Separation scientists frequently encounter critical pairs that are difficult to separate in a complex mixture. To save time and expensive solvents, an effective alternative to conventional screening protocols or mathematical peak width reduction is called iterative curve fitting.
Eyes on the Prize: Overcoming Uncertainty to Realize the Power of 2D-LC Separations
June 10th 2024In this month’s column, I highlight some of the primary considerations we face in method development and point to resources that can help users overcome uncertainty and develop highly effective 2D-LC methods.