Môi trường

Analysis of Per/Polyfluoroalkyl Substances (PFAS) in Drinking Water by EPA 537.1 and EPA 533 Using the Agilent Ultivo Triple Quadrupole LC/MS

This application note highlights the validation of EPA methods 537.1 and 533 for per/polyfluoroalkyl substances (PFAS) in drinking water in a commercial lab setting. The analytes were all separated using Agilent Poroshell EC-120 columns in both methods. Peak asymmetry factors were within EPA guidelines while achieving a run time of less than 10 minutes, allowing significant throughput gains over the EPA method run times. Recovery of all analytes following the solid-phase extraction of 250 mL samples was between 70 to 130% following protocols outlined in EPA methods 537.1 and 533. The method reporting levels were calculated according to EPA guidelines. Levels were lower than 2 ng/L and below those listed in the EPA method single lab validation despite using lower injection volumes than stated