Bad Automobile Air Conditioner Odors Sampled for GC Analysis
A research group from Kangwon National University (South Korea) set up a laboratory-scale test cooling bench with an airflow, temperature, and relative humidity controller and used it to simulate the unpleasant odor produced by an automobile air conditioner evaporator.
A research group from Kangwon National University (South Korea) set up a laboratory-scale test cooling bench with an airflow, temperature, and relative humidity controller and used it to simulate the unpleasant odor produced by an automobile air conditioner evaporator. The odors were collected in aluminum polyester bags and were analyzed by thermal desorption in a cryotrap followed by gas chromatographic analysis, olfactometry, flame ionization detection, and atomic emission detection and mass spectrometry. Compounds including alcohols, aldehydes, and organic acids were identified as odor-causing compounds.
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.
