This blog may help people explore some of the 'hidden' issues involved in certain media treatments of environmental and scientific issues. Using personal digital images, it's also intended to emphasise seasonal (and other) changes in natural history of the Swansea (South Wales) area. The material should help participants in field-based modules and people generally interested in the natural world. The views are wholly those of the author.
Thursday, 23 March 2023
Forevers May Not Be Forever?
Per and PolyFluoroAlkyl Substances (PFASs) are the so-called 'forever chemicals'. PFASs are a large family of synthetic chemicals, commercially used to make products stick-, stain- and/or water-resistant. Treated products include carpets, clothing, fire-fighting foam, fast-food packaging and even some cosmetics. PFASs are called 'forever chemicals', as they are not broken down by normal environmental processes. As a consequence, PFAss have now become almost ubiquitous, being found, for example, in global rainwater samples, UK drinking water etc. Worryingly, PFASs have been linked to a variety of human health conditions, including cancers. Goodness knows what impact these PFASs have on wild animals and plants. Several governments have specified legal limits for PFASs and/or banned these substances from certain products (Canada don't allow them in cosmetics). Researchers at the University of British Columbia appear to have made progress in developing a technology for the destruction of environmental PFASs (https://www.theguardian.com/world/2023/mar/22/canada-toxic-forever-chemicals-pfas-researchers). The Columbia group have developed a new silica-based material with the ability to absorb a wide range of harmful chemicals, including PFASs. They have also developed new techniques to break these absorbed materials apart. Perhaps PFASs have just lost their eternal nature?
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1 comment:
It seems rather obvious but, if PFASs have negative health effects on humans, they must influence the biologies of wild animals!
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