HILIC with Alcohol as the Organic Modifier
Researchers from Amgen (Thousand Oaks, California) examined the separation mechanism in the analysis of polar and basic hydrazines using hydrophilic interaction liquid chromatography (HILIC) with alcohol rather than acetonitrile as a weak eluent.
Researchers from Amgen (Thousand Oaks, California) examined the separation mechanism in the analysis of polar and basic hydrazines using hydrophilic interaction liquid chromatography (HILIC) with alcohol rather than acetonitrile as a weak eluent. They studied separation parameters such as alcohol type and concentration, acid modifier, buffer in the mobile phase, stationary phase type, and column temperature. They found that both electrostatic and hydrophilic interactions contributed to the retention and separation of the hydrazines. The researchers coupled the optimized HILIC technique with chemiluminescent nitrogen detection for the hydrazine analysis.
HILIC Peptide Retention Times Predicted Using New Approach
October 29th 2024Manitoba Centre for Proteomics and Systems Biology scientists produced a new means of predicting peptide retention times for hydrophilic interaction liquid chromatography (HILIC) at acidic pH in formic-acid based eluents.
Systematic Evaluation of HILIC Stationary Phases for MS Characterization of Oligonucleotides
Hydrophilic interaction chromatography–mass spectrometry (HILIC-MS) offers a flexible and efficient alternative to ion-pairing reversed-phase liquid chromatography (IP-RPLC) for oligonucleotide analysis, with column selectivity and mobile phase pH being key factors in optimizing retention and detection.
