Gas-Phase Detection of Fluorotelomer Alcohols and Other Oxygenated Per- and Polyfluoroalkyl Substances by Chemical Ionization Mass Spectrometry
| Autor: | Johnsie R. Lang, Andrew B. Lindstrom, Mark J. Strynar, John H. Offenberg, Theran P. Riedel |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
chemistry.chemical_classification
Detection limit Chemical ionization Chromatography Ecology Resolution (mass spectrometry) Health Toxicology and Mutagenesis Iodide Parts-per notation Hexafluoropropylene oxide Pollution Article chemistry.chemical_compound chemistry Reagent Environmental Chemistry Fluorotelomer Waste Management and Disposal Water Science and Technology |
| Zdroj: | Environmental Science & Technology Letters. 6:289-293 |
| ISSN: | 2328-8930 |
| DOI: | 10.1021/acs.estlett.9b00196 |
| Popis: | Per- and polyfluoroalkyl substances (PFAS) are incorporated into an ever-increasing number of modern products and inevitably enter the environment and ultimately human bodies. Herein, we show that chemical ionization mass spectrometry with iodide reagent ion chemistry is a useful technique for the detection of fluorotelomer alcohols (FTOHs) and other oxygenated PFAS, including per- and polyfluoro carboxylic acids such as hexafluoropropylene oxide dimer acid. This technique offers direct, high-time resolution measurement capability with parts per trillion by volume (nanograms per cubic meter) gas-phase detection limits. Measurements were taken by direct volatilization of samples without prior processing, allowing for fast measurements and reduced sample treatment compared to established PFAS methods. We demonstrate the utility of this technique by sampling volatile and semivolatile PFAS from fluoro additives and fluoro products to quantify levels of FTOHs and identify additional fluorinated compounds for which standards were unavailable. |
| Databáze: | OpenAIRE |
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