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Brahm Prakash | Authors

Articles

Rapid Quantitation of PFAS in Non-Potable Waters

The presence of per- and polyfluoralkyl substances (PFAS) in water is an important health and environmental concern. Liquid chromatography–mass spectrometry (LC–MS) has been established as the most suitable technology for monitoring these substances. A method is described, using EPA 8327, for PFAS analysis in groundwater, surface water, and wastewater.

Improved Analysis of Polyfluorinated Alkyl Substances in Environmental Samples Using Optimized ASTM Method 7968/7979

This article evaluates ASTM D7979-16 for the “direct” analysis of 30 PFCs and 19 mass-labeled surrogates. Instead of using solid-phase extraction, the PFCs were solubilized in a methanol–water mix and filtered if necessary, and the sample was injected into a LC–MS/MS system.