SPME Fiber Coating
Researchers from Fudan University (Shanghai, China) and Nanjing University (Nanjing, China) have proposed the use of polythiophene as a coating for a solid-phase microextraction (SPME) device.
Researchers from Fudan University (Shanghai, China) and Nanjing University (Nanjing, China) have proposed the use of polythiophene as a coating for a solid-phase microextraction (SPME) device. The researchers used an electrodeposition process to coat a stainless steel wire with the compound. The coated wire was then used to extract organochlorine pesticides from water samples. The extracted analytes were analyzed by gas chromatography. The new coating was found to work as well as carbowax?divinylbenzene fibers currently in use.
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.
