Restek Corporation

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Method development for simultaneous analysis of ultrashort-chain, alternative, and legacy per- and polyfluoroalkyl substances (PFAS).

Method Development for Simultaneous Analysis of Ultrashort-Chain, Alternative, and Legacy per- and polyfluoroalkyl substances (PFAS).

Here, we used Resprep PLR SPE to simultaneously remove proteins and phospholipids from plasma in one high-efficiency sample preparation process.

· Traps and “delays” system-related PFAS, preventing interference · Allows accurate identification and quantitation of trace-level PFAS · Highly retentive-no breakthrough even with extended equilibration times

· Traps and “delays” system-related PFAS, preventing interference · Allows accurate identification and quantitation of trace-level PFAS · Highly retentive-no breakthrough even with extended equilibration times

-Use of smaller and sub-2-µm superficially porous particles for LC separations -Adoption of LC and SPP in cannabis testing -Metal–organic frameworks for liquid chromatography

· Traps and “delays” system-related PFAS, preventing interference · Allows accurate identification and quantitation of trace-level PFAS · Highly retentive-no breakthrough even with extended equilibration times

· Traps and “delays” system-related PFAS, preventing interference · Allows accurate identification and quantitation of trace-level PFAS · Highly retentive-no breakthrough even with extended equilibration times

Method development for simultaneous analysis of ultrashort-chain, alternative, and legacy PFAS.

Method Development for Simultaneous Analysis of Ultrashort-Chain, Alternative, and Legacy PFAS

Testing shows that Restek Long-Life ESI electrodes for Sciex Turbo V sources provide equivalent chromatographic performance to original equipment manufacturer electrodes over significantly longer lifetimes.

Using a PFAS delay column is an effective way to separate target PFAS in samples from interferences caused by PFAS contamination in the LC system.

Using a PFAS delay column is an effective way to separate target PFAS in samples from interferences caused by PFAS contamination in the LC system.

This method showed excellent precision and accuracy for the 12 FDA regulated mycotoxins that were evaluated during a validation study that covered a variety of matrices.

This method showed excellent precision and accuracy for the 12 FDA regulated mycotoxins that were evaluated during a validation study that covered a variety of matrices.

By switching to a Raptor C18 column, labs can process more samples per hour while still meeting fluorochemical method requirements.

• Raptor C18 SPP 5 μm core-shell silica particle columns offer excellent resolution for fluorochemicals with short total cycle times. For even faster analysis, 2.7 μm core-shell particles are available. • Meets EPA Method 537 requirements. • Unique, robust Raptor C18 column design increases instrument uptime.

By switching to a Raptor C18 column, labs can process more samples per hour while still meeting fluorochemical method requirements.

Decrease analysis time for fluorochemicals with no sacrifice in chromatographic performance. Rapid perfluorinated alkyl analysis by LC-MS/MS increases sample throughput.