[thegnat]

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A contaminant found in rivers and estuaries the world over can "rob" fish of their ability to sense each other and stay in a tight, cohesive shoal, say researchers. The chemical, 4-nonylphenol, does this by overpowering the fish's natural smell-signatures, say researchers. And because these signatures are critical to helping the fish form in groups, the chemical effectively weakens their "strength in numbers" defence against predators.

[Rei]

O________o
that sucks... for the fish.

Hum... while we're talking about fish and soap.
I came across a product that claims to get rid of the smell of fish/garlic etc on hands etc.
It's in the form of a steel?? elliptical sphere.

I figured it probably has something to do with a chemical reaction that happens b/w the aromatic compounds and the metal or something. But I haven't been able to find out what it is.
So now I pose this question to the resident chemistry genie.

[deicruxified]

when we go camping for weeks, we use a so called fish friendly soap which can also be used as a body soap... well they say it's fish friendly. it doesn't create bubbles in freshwater. but i still doubt it's fish-friendliness we camp as hermits - side a side b clothes
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[thegnat]

Originally Posted by Rei

O________o that sucks... for the fish. Hum... while we're talking about fish and soap. I came across a product that claims to get rid of the smell of fish/garlic etc on hands etc. It's in the form of a steel?? elliptical sphere. I figured it probably has something to do with a chemical reaction that happens b/w the aromatic compounds and the metal or something. But I haven't been able to find out what it is. So now I pose this question to the resident chemistry genie.

racks orgo brain - remembers metal complexes do black magic to organic compounds, especially double bonds, now what do they do? That is the question... I *believe* if my memory serves me correctly, metals can hydrogenate(??? I'm forgetting my terminology! But I remember the reaction) double bonds, therefore if an aromatic met a metal, its double bonds would essentially disappear and turn into hydrogens. ie CH2=CH2 --> CH3-CH3 => C6H6 --> C6H12