Achieving low parts-per-quadrillion detection limits for PFAS analysis in drinking water
Discover new ways to reduce contamination, modify sample preparation and elevate the sensitivity of mass spectrometers to reach low, single-digit ppq (pg/L) detection levels.
In June 2022, the US EPA announced new drinking water health advisory levels (HALs) for 4 per- and polyfluoroalkyl substances (PFAS). In particular, these new HALs required a detection limit of 4 parts per quadrillion (ppq) for perfluorooctanoic acid (PFOA).
Download our content and learn:
- How SCIEX and Eurofins became the first to market to achieve 4 ppq detection levels
- The advantages of a positive-pressure, HEPA-filtered clean room
- Why a modified SPE method requiring only a 25x concentration step eliminated the need for sample blow down and reconstitution
- How the SCIEX 7500 system was able to detect single-digit pg/L levels
- Ways to minimize contamination for challenging methods