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Dr. Ernest Blatchley

👤 Speaker
118 total appearances
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Appearances Over Time

Podcast Appearances

Science Friday
That chlorine smell at the pool? It’s pee

It'll be treated and then it'll be pumped back into the pool.

541.667 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

It's recirculated that way.

544.33 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

In this system, what they did was they designed intentionally a deep gutter so that there is quite a bit of depth to the, the water was maybe six or eight inches deep, something like that, but much deeper than you normally have in the gutter around a pool.

546.325 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

And then they put perforated pipes in the bottom of that gutter and they introduced compressed air to generate bubbles.

561.54 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

So those bubbles then would move through that six or eight inch deep water column.

568.746 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

And then they applied a

574.092 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

negative pressure or a vacuum to what's called the headspace.

575.84 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

That's basically the air above that water column and then draw that air off and then vent it to the outside.

579.084 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

And again, the idea there is it strips those chemicals, but does so in a manner that bypasses the place where people are breathing.

585.994 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

Yeah, it worked really well.

594.225 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

Yeah, it was quantifiably better.

596.508 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

So we had instrumentation set up at the Olympic venue in Paris and

599.292 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

And we were able to demonstrate that this system worked well.

603.751 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

I think that's an accurate statement.

619.806 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

I would say that when we first started this work, we identified 11 compounds that we found in every chlorinated pool that we looked at, one of which was trichloramine.

621.768 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

So what we're talking about here really is focusing on trichloramine really for a couple of reasons.

630.633 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

One, it is the chemical that has caused the greatest concern because people are familiar with it.

636.419 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

We all smell it, you know, that sort of thing.

641.965 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

And there are known human health effects.

644.208 View full episode →
Science Friday
That chlorine smell at the pool? It’s pee

And that's not conveniently true for most of the other volatile chemicals that are present in swimming pools.

646.791 View full episode →