Radiosynthesis of perfluorooctanesulfonate (PFOS) and perfluorobutanesulfonate (PFBS), including solubility, partition and adhesion studies

Chemosphere
Maria SundströmAke Bergman

Abstract

Here, we describe for the first time the synthesis of [(35)S] PFOS and [(35)S] PFBS with sulfur-35 enriched sulfur dioxide as the radiolabelled reagent, resulting in 2.5 and 2.3 mCi of product, respectively. Basic information concerning the physicochemical properties of perfluorooctanesulfonate (PFOS), perfluorobutanesulfonate (PFBS) and perfluorooctanoic acid (PFOA) are still limited. Hence, we utilized these radiolabelled perfluoroalkanesulfonates (PFSAs), as well as carbon-14 labelled perfluorooctanoic acid ([(14)C] PFOA) to determine some basic characteristics of physiological and experimental significance. The solubility of PFOS in buffered aqueous solutions at pH 7.4 was found to be severely reduced in the presence of potassium and sodium ions, which, however, did not reduce the solubility of PFOA or PFBS. PFOS was found to adhere to a small extent to polypropylene and polystyrene, whereas no such adhesion of PFOA or PFBS was detected. The extents of adhesion of PFOS and PFOA to glass were found to be 20% and 10%, respectively. For the first time, the partition coefficients for PFOS, PFBS and PFOA between n-octanol and water were determined experimentally, to be -0.7, -0.3, and 1.4, respectively, reflecting the difference...Continue Reading

References

May 12, 2001·Environmental Science & Technology·J P Giesy, K Kannan
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Nov 1, 2003·Environmental Toxicology and Chemistry·Paul D JonesJohn P Giesy
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Citations

Apr 22, 2015·Aquatic Toxicology·Mazhar UlhaqStefan Örn
Sep 5, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Jae Young LeeJongho Jeon
Aug 25, 2020·Food and Chemical Toxicology : an International Journal Published for the British Industrial Biological Research Association·Yiren YueYeonhwa Park

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