4 ms·
Rainwater pretty much distills itself as it evaporates. I didn’t read the article but it seems like they’d new some new physics to get it into rain.
by bilsbie 4y ago
Rainwater pretty much distills itself as it evaporates. I didn’t read the article but it seems like they’d new some new physics to get it into rain.
- philipkglass 4y agoThe PFAS that show up in rain get there by also having a vapor pressure sufficient for atmospheric transport. They evaporate and condense with the rain. These chemicals aren't Teflon itself but other polyfluorinated molecules, used as intermediates in Teflon product production or for other purposes.
- deleted 4y ago[deleted]
- hombre_fatal 4y agoI just googled it. PFAS are simply emitted into the atmosphere and then brought back, rain precipitation being one method of "atmospheric deposition" (something to google). i.e. water doesn't need to evaporate with something in aerosol suspension for that thing to be found in precipitation.