Dave wrote:


On Mon, 03 Oct 2005 18:31:49 GMT, Rosalie B.
said:


The boiling point of pure lead is 3180F. The melting point is 621.43F.
Vaporization will not occur at the melting point as you yourself pointed out
with your comment about the microchip industry.
What you sampled, IMHO, was lead dust, not fumes. Did you measure the
particle sizes present?

It doesn't really matter to the body whether the lead is breathed in
as dust or fume. Both are hazardous.

It makes a great deal of difference, however, to the matter under
discussion. You argue that melting lead in a can over a stove creates lead
fumes. Gordon argues that the temperature is too low to create lead fumes.
The fact that lead might be ingested by breathing dust is utterly irrelevant
to that issue.

Except that lead fume, if it isn't breathed in BECOMES lead dust when
it cools.

What did you think happened to it?


grandma Rosalie