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Old Jan 15th, 2008, 01:04 PM   #1
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Question Home Lead Test

So here's the problem. Got a couple of nice mugs for Christmas complete with "Made in China" labels. I would like to test for lead leeching and vaguely remember a simple lead test from my high school days. It involved household chemicals, one was vinegar but I can't remember the rest.

So far my web searches have been a bust. Lots of test kits out there but I am striking out looking for the ingredients and method.

Just need a simple yes or no test, exact quantity is completely irrelevant.
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Last edited by eMacMan; Jan 15th, 2008 at 03:37 PM.
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Old Jan 15th, 2008, 08:58 PM   #2
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High School days indeed!
I found this very interesting as a search.

See links:
Are You Being Poisoned by Your Dishes?

http://www.geocities.com/CapeCanaver...ab-Env-07.html

Also:

Quote:
Vinegar containing lead gives a yellow precipitate of iodide of lead, when iodide of potassium is added to it; when it is free from lead and copper, hydrogen sulphide causes no precipitate. When the mineral acids are present they may be detected, according to Chiappe, by producing a deep-blue coloration, with an aqueous or alcoholic solution of Paris violet (methyl-anilin-violet).
(From old home remedy tomes)

Useful link on lead in dishes:
Lead in China Dishes: A Dish Owner's Guide - Environmental Defense
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Old Jan 15th, 2008, 09:34 PM   #3
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Thanks, I was pretty sure you used vinegar to leech out lead but could not remember what came next. That was a very very long time ago.

Wonder if Calcium Chloride which I have on hand might do the trick as well?

Glad it was not potassium bromide as I turned about a gallon of that stuff over to the fire department once I decided my days in the photolab were indeed over.
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Old Jan 17th, 2008, 12:57 AM   #4
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Isn't it the lead in wine glasses that causes that beautiful ping sound?
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Old Jan 17th, 2008, 10:57 AM   #5
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Yep. I am pretty sure it does not leach out of good crystal, nonetheless I would avoid using leaded crystal decanters as wine is acidic.
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Old Jan 17th, 2008, 05:14 PM   #6
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I understand that if you keep alcohol (such as whiskey) in a lead crystal decanter for a long period of time the lead will leach into it. Unfortunately, I don't know what is meant by a "long time". Fortunately, I don't have that problem because the irish doesn't last long enough.
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Old Jan 17th, 2008, 05:31 PM   #7
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Here's a thought. After desilvering photo fix, the test for residual silver was to shine up a penny and dip it into the desilvered solution. If silver was present it would plate out onto the penny within about 10 seconds if not the penny got shinier.

Wonder if that would work with vinegar that has lead in solution?
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Old Jan 17th, 2008, 05:37 PM   #8
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Lead Test

You can get indicator kits that will tell you if there's lead in the paint, or not. However, these may not work if the paint has been covered by a glaze of some kind.

Good point, though. I work in public health and had someone call me to ask about her new puppy's chewy toys ... all made, of course, in China. Something I hadn't thought of.
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Old Jan 18th, 2008, 04:07 PM   #9
 
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You could always have a kid lick the container over and over again, and if in 15 years, he's really dumb, then most likely the container has lead.
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Old Jan 18th, 2008, 04:12 PM   #10
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Quote:
Originally Posted by guytoronto View Post
You could always have a kid lick the container over and over again, and if in 15 years, he's really dumb, then most likely the container has lead.
Do you know this from experience?
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