Methods from organizations, including the International Organization for Standardization (ISO) and the Environmental Protection Agency (EPA), were selected for evaluation. Using the unique modeler tool, methods were developed virtually, tested experimentally, and retention times were compared to the results given by the modeler.
A library containing 58 PFAS compounds was used to virtually develop methods. Analytes were first selected, followed by column chemistry and dimension. Mobile phase, temperature, and gradient were modified to optimize isobaric separations and run time. Conditions were transferred to the instrumentation and data collected. To determine if results of the modeler were acceptable, retention times should not exceed more than 50% of a typical MRM window (±15 seconds) or no more than 10% of the runtime. Results show the modeler can develop and optimize separations quickly and accurately, offering the users the ability to increase throughput by saving time and cost.
