Original Article:
Sorption, Aerobic Biodegradation, and Oxidation Potential of PFOS Alternatives Chlorinated Polyfluoroalkyl Ether Sulfonic Acids
Hong Chen, et al.
Environ. Sci. Technol. 2018, 52, 17, 9827–9834.
10.1021/acs.est.8b02913
Perfluorooctane sulfonate (PFOS) is one of the most important chemical products in the 20th century, and it is widely used in industrial production and daily consumption. However, PFOS was added to the Stockholm Convention on Persistent Organic Pollutants as levels of PFOS detected in wildlife were deemed sufficient to affect health parameters. Given their structural similarities and similar physicochemical properties to PFOS, chlorinated polyfluoroalkyl ether sulfonic acids (Cl-PFESA) may serve as potential PFOS substitutes, such as fog suppressants for the chrome plating industry.
Therefore, this work investigated the adsorption, aerobic biodegradation, and oxidation potential of Cl-PFESAs, including 6:2 Cl-PFESA (9-chlorohexadecafluoro-3-oxanonane-1-sulfonate) and 8:2 Cl-PFESA (9-chlorooctadecafluoro-3-oxanonane-1-sulfonate). The findings suggest that Cl-PFESAs, in addition to being more adsorbent, are as recalcitrant as PFOS and thus have a higher bioaccumulation potential for similar alkyl chain lengths. Furthermore, aerobic biodegradation in loam soils showed negligible degradation of Cl-PFESAs at 24 ± 0.5 °C.
Chemicals Related in the Paper:
| Catalog Number | Product Name | Structure | CAS Number | Price |
|---|---|---|---|---|
| ACM73606196 | Potassium 9-Chlorohexadecafluoro-3-Oxanonane-1-Sulfonate |  |
73606-19-6 | Price |
