Neuneu wrote:
Le Thu, 30 Jul 2009 16:46:22 +0100, Jeff Layman a écrit :

However, as far as I can tell, neither of the references gives the
result of measuring levels of glyphosate in "natural water".

Here :

http://seaus.free.fr/spip.php?article27

"Il se retrouve presque systématiquement dans les rivières mais désormais
aussi dans les eaux souterraines, où 20 % des prélèvements l'ont mis en
évidence."

Sorry for non-french readers

Still no levels stated (as, for example, ng/ml). Even the third paragraph
in "Faune menacée", which states the toxic level to fish, does not give
actual levels found.

You can also find some interest in readind :
http://www.ifen.fr/acces-thematique/...ncontrees.html

knowing that AMPA is the result of degradation (not sure of the word in
english) of glyphosate.

Just have a look at the graph... amazing.

Indeed. Many toxic substances were found. It's not good, but without
actual levels no real conclusions can be drawn. Analytical methods are now
so sensitive that many chemicals can be detected at extraordinarily low
levels - far below what would be considered toxic. Yet, they would appear
in that graph as they had been detected.

--
Jeff