LCGC North America Application Note Alert Having trouble viewing this email? Click here GC TF-SPME of Fatty Food Flavors Flavor analysis of various high fat foods is performed using solvent free thin film(TF)–SPME–GC–MS, an extension of regular SPME with higher recovery Analyze More Semivolatile Samples per Shift Using Split Injection Using split injection can increase sample throughput for semivolatiles analysis because it provides faster oven cycle times due to the use of higher initial oven temperatures.     LC Mass-Based Isolation of Natural Product Impurities This application note describes the isolation of a natural product extract. Mass-selective detection was used to trigger collection of the desired compounds. Aflatoxin Assay Using a Low-Cost Fluorescence Detector An isocratic HPLC method for the analysis of aflatoxins. Uses the DFL-10 ( filter fluorescence detector) with a photochemical reactor to improve sensitivity.   LC-MS Patulin in Apple Products by SPE A simple solid-phase extraction method for patulin cleanup and analysis in various apple/pear products, with LC–UV and LC–MS/MS. Characterization of TSKgel® FcR-IIIA-NPR HPLC Column by Top-Down Mass Spectrometry This application demonstrates the efficacy of this chromatographic technique for a fast orthogonal analysis to evaluate mAb ADCC activity. Uncommon Fix for LC–MS Ion-Suppression Metal-free columns should be considered when troubleshooting ion-suppression. Chelating compounds that can form metal salt with stainless steel column housings are examined.   Sample Prep Solid-Phase Extraction of Organochlorine Pesticides and PCBs by EPA Method 608.3 A modified SPE method using UCT’s large ID C18 cartridges has been demonstrated for the extraction of organochlorine pesticides in water.