Method Guide for PFAS Analysis: A Survey of Global Methods and Guidelines
Due to the prevalence of PFAS in our daily lives, governments and scientific communities continue to develop new PFAS testing methods to detect these “forever” chemicals. In this article, we survey existing PFAS testing methods and guidelines from around the world to help labs find successful testing methods for their samples.
Meet EPA Method 537.1 PFAS Requirements with a Contaminant-Free Workflow
This application note demonstrates a contaminant-free workflow for EPA Method 537.1 PFAS analysis. As shown here, no background interferences were present, and good recoveries were obtained for all target analytes. Use of clean, contaminant-free supplies results in reliable system qualification and more accurate reporting.
Simplify Glyphosate Analysis with This Direct Injection Method
In this approach for glyphosate in water, ppt-level sensitivity is easily achieved with direct 500 µL injections (no derivatization or ion pairing). The unique hybrid retention modes of Raptor Polar X columns optimize retention and elution such that large volume injection can be used to improve low-level sensitivity.
New Combined Method for Ethylene Oxide and TO-15A Analysis
Ethylene oxide (EO) is a hot topic in air analysis because it has been found to grow in air canisters, causing biased results. As this method evaluation shows, EO analysis can be combined with TO-15A testing, producing detection limits down to 18 pptv, good accuracy and precision, and a stability of a least one week.