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Re: dioxin fingerprints
> From: Jon Campbell <email@example.com>
> Now, dioxin formation is another matter. Anytime you
> have free chlorine around organics there is the opportunity
> to create dioxin.
This is incorrect; dioxin formation is generally considered a forced
reaction. Otherwise the oceans would be a wealth of dioxins and
> I forgot to mention. Again, as in the case of chlorine
> water treatment, there is no controversy about the
> presence of dioxin in household wastewater, but much
> about where it comes from...
Totally agreed. Almost impossible to eliminate trace contamination in
a lot of things and will be for generations to come - it is getting
better, but dioxins and PCBs have invaded about every piece of
biosphere on this planet. Now whether it is *formed* at the house is
another subject altogether, though.
Again, I am a little away from my expertise (which centers on air, not
wastewater). However, I did bother to start looking through some
reference material. One of the more recent articles in Chemosphere had
an abstract that basically said that chlorination at the POTW does
*not* lead to an increase in dioxins (Chemosphere 1997
Mar;34(5-7):989-997). I also acknowledge this is just one article and
far from the whole story. I'll be making a few efforts at the library,
pull out full texts of reference material, let you do the same, we'll
see where it goes.