bill edwards on thu 30 jun 05
This one is not totally simple but explainable enough
for most to understand in regards to metal oxide
toxicity for some metals.
Each oxide comes with its own route of exposure and
there are varying acceptable known levels. LD/50, TLV,
etc. Body weight and route of exposure can induce
symptoms of exposure that can be chronic (long term)
or accute (immediate) harm, when these substances are
inhaled, digested or placed on the skin.
I didn't fully proof read this url/site but I seen
enough to help answer alot of my own questions. I have
my own set of criteria I use based on lab testing but
there's a good probability to come within an
acceptable educational role in determining dangers. I
won't call this common sense, I will say it takes
logic and determination or someone willing to do the
research and produce the end results in lay terms for
consumer consumption.
Here's the url I spoke of earlier.
http://tuberose.com/Heavy_Metal_Toxicity.html
Keep in mind some of these are of differing levels
such as in chromium III and IV. We have all this in
the archives. It also needs addressed when, whoever?
decides to work on a list for lay people who do
pottery and don't want to become toxicologists and lab
experts.
We could use the potentials for harm mostly from the
below materials and others like them. Maybe we can
conclude this by getting Dr. Ed to out the facts into
a simplier method such as the one described below. Dr.
ED can you do this and compile a simple list. I will
copy it and make sure to keep it available in my
studio and in any future teaching. I prefer this
coming from someone with your experience in that
field!
Copper
Harmful when?
How Supplied?
In what ammount?
Exposure and Route?
Cobalt
Harmful when?
How Supplied?
In what ammount?
Exposure and Route?
Nickle
Harmful when?
How Supplied?
In what ammount?
Exposure and Route?
Zinc
Harmful when?
How Supplied?
In what ammount?
Exposure and Route?
We need to include the most widely used metal oxides
when making this determination.
Maybe we can get this down to an art-form if we
collect ourselves together enough to get the data in
lay-terms using our best people here.
Bill Edwards
Edmar Studio and Gallery
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