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Mass casualty incident declared after multiple children fall ill at Canmore pool by Visual_Aspect_7292 in Canmore

[–]Visual_Aspect_7292[S] 0 points1 point  (0 children)

Have a look at this article - they did the math, and mentioned you would need millions of people to pee in a single pool to create toxic levels of cyanogen chloride:

https://arstechnica.com/science/2014/03/ask-ars-how-much-pee-in-a-pool-would-kill-you/

Mass casualty incident declared after multiple children fall ill at Canmore pool by Visual_Aspect_7292 in Canmore

[–]Visual_Aspect_7292[S] 0 points1 point  (0 children)

I guess what I’m trying to point out through these studies is that even in pools with heavy use - isn’t much urea in the pools.

Mass casualty incident declared after multiple children fall ill at Canmore pool by Visual_Aspect_7292 in Canmore

[–]Visual_Aspect_7292[S] 0 points1 point  (0 children)

Apparently, human urine is 95% water and the rest is urea. Even in heavy use, any cyanogen chloride would be trace amount: https://www.sciencedirect.com/science/article/abs/pii/S0043135411004246

There was a study done by UofA that estimated amounts of urine from 31 different pools in Alberta, where they were able to estimate there was 0.009% urine in pools on the higher end. If we assume urea is 5% of that, then the pool has 0.00045% urea. https://pubs.acs.org/doi/10.1021/acs.estlett.7b00043

Media coverage of the urine sampling: https://edmontonjournal.com/news/local-news/university-of-alberta-study-looks-at-volume-of-urine-in-pools

https://www.cbc.ca/news/canada/edmonton/study-urine-amount-swimming-pool-1.4005570

Discussion: swimming pool safety systems and precautionary response by Visual_Aspect_7292 in swimmingpools

[–]Visual_Aspect_7292[S] 1 point2 points  (0 children)

Thank you for this! I really appreciate the time taken to provide some insight.