Garry Wakely on thu 28 oct 99
Hi Clay People,
I am trying to find out about the toxicity of litium when used in glazes.
I have heard that lithium based glazes are not suitable for food wares, but
can find no articles to back this up. Is it safe? Is it unsafe? My
assumptions were that lithium acted like barium in that it would leach back
out of the fired glaze, but I now am no longer sure.
Can someone fill me in, please?
Thanks,
Garry
___________________________________________________
On the day of the dead, when the year too dies,
Must the youngest open the oldest hills
Through the door of the birds, where the breeze breaks.
There fire shall fly from the raven boy,
And the silver eyes that see the wind,
And the Light shall have the harp of gold.
By the pleasant lake the Sleepers lie,
On Cadfan's Way where the kestrels call;
Though grim from the Grey King shadows fall,
Yet singing the golden harp shall guide
To break their sleep and bid them ride.
When light from the lost land shall return,
Six Sleepers shall ride, six Signs shall burn,
And were the midsummer tree grows tall
By Pendragon's sword the Dark shall fall.
Susan Cooper - Silver on the Tree
Edouard Bastarache on fri 29 oct 99
------------------
In patients' blood, the toxic and therapeutic levels are
very close=3B any activity leading to loosing much body
water may switch a patient taking lithium carbonate
form the therapeutic to the toxic zone, as in sweating in
the melting department of a steel mills. Also many
anti-inflammatory drugs raise the lithium blood levels
of patients and cause the intoxication, i saw
one case 2 years ago.Motrin(Advil) is one of the
possible offenders, it is important to remember this name
because it may be sold without a prescription.So, as far
as i am concerned, i am much more afraid of these
situations for patients taking lithium carbonate than
picking up a few atoms of lithium from a pot covered
by a lithium-containing glaze=3B more specially if the
amount used in the glaze is low, the formula is well
balanced and the pots are high-fired.
Later,
Edouard Bastarache
edouardb=40sorel-tracy.qc.ca
http://www.sorel-tracy.qc.ca/=7Eedouardb/
-----Message d'origine-----
De : Garry Wakely =3Cgwakely=40interchange.ubc.ca=3E
=C0 : CLAYART=40LSV.UKY.EDU =3CCLAYART=40LSV.UKY.EDU=3E
Date : 28 octobre, 1999 15:41
Objet : Lithium Toxicity
----------------------------Original message----------------------------
Hi Clay People,
I am trying to find out about the toxicity of litium when used in glazes.
I have heard that lithium based glazes are not suitable for food wares, but
can find no articles to back this up. Is it safe? Is it unsafe? My
assumptions were that lithium acted like barium in that it would leach back
out of the fired glaze, but I now am no longer sure.
Can someone fill me in, please?
Thanks,
Garry
=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F==
5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5F=5=
F
On the day of the dead, when the year too dies,
Must the youngest open the oldest hills
Through the door of the birds, where the breeze breaks.
There fire shall fly from the raven boy,
And the silver eyes that see the wind,
And the Light shall have the harp of gold.
By the pleasant lake the Sleepers lie,
On Cadfan's Way where the kestrels call=3B
Though grim from the Grey King shadows fall,
Yet singing the golden harp shall guide
To break their sleep and bid them ride.
When light from the lost land shall return,
Six Sleepers shall ride, six Signs shall burn,
And were the midsummer tree grows tall
By Pendragon's sword the Dark shall fall.
Susan Cooper - Silver on the Tree
John Rodgers on sat 30 oct 99
Gary,
Anything toxic is not funny really, but it just occurred to me that to dine
from ware leaching lithium may reduce one's manic depression....!
John Rodgers
Garry Wakely wrote:
> ----------------------------Original message----------------------------
> Hi Clay People,
>
> I am trying to find out about the toxicity of litium when used in glazes.
> I have heard that lithium based glazes are not suitable for food wares, but
> can find no articles to back this up. Is it safe? Is it unsafe? My
> assumptions were that lithium acted like barium in that it would leach back
> out of the fired glaze, but I now am no longer sure.
>
> Can someone fill me in, please?
>
> Thanks,
>
> Garry
>
> ___________________________________________________
> On the day of the dead, when the year too dies,
> Must the youngest open the oldest hills
> Through the door of the birds, where the breeze breaks.
> There fire shall fly from the raven boy,
> And the silver eyes that see the wind,
> And the Light shall have the harp of gold.
>
> By the pleasant lake the Sleepers lie,
> On Cadfan's Way where the kestrels call;
> Though grim from the Grey King shadows fall,
> Yet singing the golden harp shall guide
> To break their sleep and bid them ride.
>
> When light from the lost land shall return,
> Six Sleepers shall ride, six Signs shall burn,
> And were the midsummer tree grows tall
> By Pendragon's sword the Dark shall fall.
>
> Susan Cooper - Silver on the Tree
James Roche on sun 31 oct 99
Hello Gary,
At 13:41 28/10/99 EDT, Garry Wakely wrote:
>I am trying to find out about the toxicity of litium when used
in glazes.
Well I can't specifically comment on its ability to leach out of
various glaze formulae (since I have no experience of them), but
I can tell you that Lithium is certainly toxic to the human
body. It is used medicinally, but under very closely monitored
conditions (blood tests). Long term exposure to lithium salts
at toxic levels are known to adversely affect the thyroid and
kidneys.
James
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