News|Articles|February 19, 2024

Analysis of 28 Common PFAS Compounds using a Compact Single Quadrupole LCMS

This application showcases how a compact, affordable single quad LCMS can be easily integrated into existing laboratories for measurement of PFAS in diverse samples where adherence to regulated methods (e.g., EPA 533, 537.1, and 1633) is not required, or samples where expected concentrations are larger than sub ppb levels.


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Figure 2. Split injection used to measure triplicate test of MTBE, hexane, o-xylene, and 1-methylnaphthalene comparing different solvents (methanol, methylene chloride) and column insertion distances starting with 0.5 mm, 5.0 mm, 10.0 mm, 15 mm, and 20.0 mm. Methanol had the best performance at the 5.0 mm insertion distance and methylene chloride looked slightly better at the 0.5 mm. We would still recommend not going below the 5.0 mm manufacturer recommended insertion distance.
Revisiting insertion distance for methanol and methylene chloride in GC analysis and confirming that insertion depth strongly affects response and reproducibility.
Basel, Switzerland. Old town with red stone Munster cathedral on the Rhine river. © SCStock - stock.adobe.com
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