Biological aspects of fluorine | Wikipedia audio article
Channel: wikipedia tts
Date: 2019-02-18

This is an audio version of the Wikipedia Article:
https://en.wikipedia.org/wiki/Biological_aspects_of_fluorine


00:02:24 1 Dental care
00:06:59 2 Medical applications
00:07:10 2.1 Pharmaceuticals
00:11:37 2.2 Scanning
00:14:16 2.3 Oxygen transport research
00:17:27 3 Agrichemicals
00:19:25 4 Biochemistry
00:21:30 5 Hazards
00:21:39 5.1 Fluorine gas
00:23:14 5.2 Hydrofluoric acid
00:26:27 5.3 Fluoride ion
00:28:28 5.4 Biopersistence
00:33:52 6 See also



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SUMMARY
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Biological aspects of fluorine describes the effects of fluorine-containing compounds with life.  Fluorine (F2) itself is very rare in everyday life, but hundreds of fluorine-containing compounds occur as minerals, medicines, pesticides, and materials.  Naturally occurring organofluorine compounds are extremely rare. Nonetheless, twenty percent of all commercialized pharmaceuticals contain fluorine, examples being Lipitor and Prozac.Manmade fluorinated compounds have also played a role in several noteworthy environmental concerns. Chlorofluorocarbons, once major components of numerous commercial aerosol products, have proven damaging to Earth's ozone layer and resulted in the wide-reaching Montreal Protocol (though in truth the chlorine in CFCs is the destructive actor, fluorine is an important part of these molecules because it makes them very stable and long-lived). Similarly, the stability of many organofluorine compounds has raised the issue of biopersistence. Long-lived molecules from waterproofing sprays, for example PFOA and PFOS, are found worldwide in the tissues of wildlife and humans, including newborn children.
Fluorine biology is also relevant to a number of cutting-edge technologies. PFCs (perfluorocarbons) are capable of holding enough oxygen to support human liquid breathing. Organofluorine in the form of its radioisotope 18F is also at the heart of a modern medical imaging technique known as positron emission tomography (PET). A PET scan produces three-dimensional colored images of parts of the body that use a lot of sugar, particularly the brain or tumors.