In a message dated 5/4/2004 9:30:37 AM Pacific Standard Time,
[log in to unmask] writes:
Another number I've got, gives 30% of the Pb leachages in landfills are due
to the 0,5% of Pb in electronics.
Hello Pascal

Could you please provide the source for the above comment relative to
leaching?

Are you referring to hard data relative to leaching or presumed leaching
based on acetic acid tests. To my knowledge no one has ever produced field
evidence of lead leaching as there are quite simply too many other factors in nature
that tie it up and immobilize it.

Even if it were so, there are so many confounding factors, such as lead paint
in landfills from demolition refuse (much of it in lead acetate form by the
way) and legacy tetra ethyl lead from gasoline, that to assert that lead from
electronics is 30% of the cause would be the sole cause seems to me to be
folly.

Thank you in advance for providing the reference.

Kind regards,
Joe

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