Dispersive Liquid-Phase Microextraction of Aromatic Amines in Water
Scientists from Henan Normal University (Xinxiang, China) and the University of Science and Technology Beijing (Beijing, China) developed an ultrasound-assisted ionic liquid dispersive liquid-phase microextraction procedure for determining four aromatic amines in water samples.
Scientists from Henan Normal University (Xinxiang, China) and the University of Science and Technology Beijing (Beijing, China) developed an ultrasound-assisted ionic liquid dispersive liquid-phase microextraction procedure for determining four aromatic amines in water samples. The aromatic amines — 2,4-dichloroaniline, 1-naphthylamine, 6-chloroaniline, and N,N-dimethylaniline — were analyzed after the extraction procedure by high performance liquid chromatography with UV detection. The method was used successfully to analyze real water samples, and they obtained spiked recoveries of 92.2–119.3%.
Study Explores Thin-Film Extraction of Biogenic Amines via HPLC-MS/MS
March 27th 2025Scientists from Tabriz University and the University of Tabriz explored cellulose acetate-UiO-66-COOH as an affordable coating sorbent for thin film extraction of biogenic amines from cheese and alcohol-free beverages using HPLC-MS/MS.
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.
