Per- and Polyfluorinated Alkyl Substances

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Across
  1. 1. SGS supports a modified OTM-45 analysis for the measurement of 25 PFAS in what matrix?
  2. 3. SGS has developed and validated many methods over the years (1633 PFAS, 1668 PCB congeners, 1614 PDBE, 1694 PPCPs, 1698 Sterols/Hormones, 1699 Pesticides, 1613 dioxins by GC-MS/MS) for what regulatory agency?
  3. 4. SGS was one of the first commerical labs to support this method which enables extended monitoring of precursor PFAS by oxidizing the sample to convert characterized and uncharacterized PFAS into perfluoroalkyl acids that can be reported using LC-MS/MS.
  4. 5. What PFAS screening method with rapid 3-5 day turnaround time has SGS had online for over a year?
  5. 6. SGS supports this DW program that requires monitoring for 29 PFAS compounds and a single metal analyte, Lithium.
  6. 7. SGS can measure these <4 chain length compounds from the same EPA 1633 sample extract.
Down
  1. 1. SGS measures organic fluorine in aqueous matrices and provides a single concentration by what method?
  2. 2. Radiochemical method of analysis for measuring the mass and quantity of an element in a substance and regarded as the "Gold Standard" of quantitation for PFAS measurement.
  3. 3. SGS developed and validated this method for the US EPA and is recommended for use as the standard PFAS method for all matrices other than drinking water.