[HN Gopher] Tire-related chemical responsible for salmon deaths ...
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       Tire-related chemical responsible for salmon deaths in urban
       streams (2020)
        
       Author : deegles
       Score  : 48 points
       Date   : 2024-09-04 20:42 UTC (3 days ago)
        
 (HTM) web link (www.washington.edu)
 (TXT) w3m dump (www.washington.edu)
        
       | aaronbrethorst wrote:
       | [2020]
       | 
       | I was confused to see this pop up now as this feels like common
       | knowledge in Seattle, but the 2020 date on the article definitely
       | clarifies that.
        
       | matt123456789 wrote:
       | 6PPD -> 6PPD-quinone
        
       | twojacobtwo wrote:
       | For those wondering what the chemical is and its purpose:
       | 
       | >6PPD helps by reacting with ozone before it can react with the
       | tire rubber, sparing the tires.
       | 
       | >But when 6PPD reacts with ozone, the researchers found that it
       | was transformed into multiple chemicals, including 6PPD-quinone
       | (pronounced "kwih-known"), the toxic chemical that is responsible
       | for killing the salmon.
        
       | clumsysmurf wrote:
       | I wonder if we are inhaling this.
       | 
       | I live in Phoenix, and when I go out at night with a good
       | flashlight, the amount of stuff in the air, visible in the beam,
       | is crazy. I imagine some is dirt among other things, but wonder
       | if the micropastics of the tires are airborne as well.
       | 
       | Since it hardly ever rains here it probably just accumulates on
       | the roads and gets kicked up with activity.
        
       | carapace wrote:
       | Salmon bring a limiting factor to growth (phosphorous if I
       | remember correctly) from the ocean to the land, then the bears
       | and other animals eat them and distribute it throughout the
       | forests through their dung. (The Native Americans around the PNW
       | had a name for this but we just figured they were talking about
       | nature spirits or something.)
       | 
       | Cars -> tire dust -> dead salmon -> reduced phosphorous -> sick
       | forest
        
       | 1-6 wrote:
       | That's remarkable investigative work done by researchers. I hope
       | schools keep fostering this type of education to improve
       | communities and bring change to fast-moving industries.
        
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       (page generated 2024-09-07 23:00 UTC)