Taking the “F” out of forever chemicals

Taking the “F” out of forever chemicals

The right solvent mix breaks down perfluorinated organic acids

Source and more : Science.org

SHIRA JOUDAN AND RYLAN J. LUNDGREN

Per- and polyfluoroalkyl substances (PFAS)—sometimes called “forever chemicals” because of their chemical stability—are synthetic molecules widely used in consumer products (1).

Ironically, the characteristics that make these compounds useful, such as lipoand hydrophobicity, high thermal stability, and resistance to chemical degradation, also lead to pervasive contamination in the environment (2). Moreover, chronic exposure to these chemicals has been associated with a host of negative human health effects (3).

Unfortunately, the carbon-fluorine bonds in PFAS are among the most inert in organic compounds, which means that their destruction requires brutal treatment, such as incineration at high temperatures.

On page 839 of this issue, Trang et al. (4) show that under specific mild conditions, perfluoroalkyl carboxylic acids (PFCAs), which are a type of PFAS, undergo spontaneous decomposition into benign inorganic fluoride ions and simple oxygenated organic molecules.

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Breaking down forever chemicals
Breaking down forever chemicals

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

References and Notes

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J. Glüge et al., Environ. Sci. Process. Impacts 22, 2345 (2020).
2
M. G. Evich et al., Science 375, eabg9065 (2022).
3
S. E. Fenton et al., Environ. Toxicol. Chem. 40, 606 (2021).
4
B. Trang et al., Science 377, 839 (2022).
5
S. Joudan, R. Liu, J. C. D’Eon, S. A. Mabury, Trends Analyt. Chem. 124, 115431 (2020).
7
H. K. Liberatore, S. R. Jackson, M. J. Strynar, J. P. McCord, Environ. Sci. Technol. Lett. 7, 477 (2020).
8
C. Zhang et al., Environ. Sci. Technol. 56, 6103 (2022).
9
D. Kong et al., Science 369, 557 (2020).
10
G. Destro et al., Angew. Chem. Int. Ed. 59, 13490 (2020).
11
S. Zhou et al., J. Am. Chem. Soc. 143, 137 (2021).
12
J. Wang et al., Environ. Sci. Technol. 56, 5355 (2022).
13
Y. Pan et al., Environ. Sci. Technol. 52, 7621 (2018).
14
E. F. Houtz, D. L. Sedlak, Environ. Sci. Technol. 46, 9342 (2012).