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Lab Rat
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How to Test for Heavy Metal in Toys (Not XRF)

02/11/2010 12:15 PM

I would like to know the procedure for testing the solubility of the metals lead, cadmium, barium, chromium and mercury.

I have an XRF device, but want to compare the levels from the two different methods.

I need information on the proper acid, time of submersion, and analysis after prep.

I have Googled this. Promise. Along with Bing, Yahoo, and others.

Might anyone have the Toys limits for heavy metals while I'm asking?

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Pathfinder Tags: heavy metals testing solubility toys
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Anonymous Poster
#1

Re: How is the test performed for "heavy metals" in toys? Not XRF.

02/11/2010 2:08 PM

Ep Toxicity Test

40CFR 261.24
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artsmith
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#2

Re: How to Test for Heavy Metal in Toys (Not XRF)

02/11/2010 7:14 PM

Not sure what you are asking about solubility test procedure, but for kids toys or jewelry you'll want to know solubility in saliva.

The new law for lead is 600 ppm "in any accessible part".

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RCE
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#3
In reply to #2

Re: How to Test for Heavy Metal in Toys (Not XRF)

02/12/2010 11:39 AM

Are you comparing the resulkts to the XRF, which reads all the metals content, not just the soluble / specific extractables portions. If this is the case you need to digest or ash the materials for many of the metals, for cadmium and mercury ashing doesn't work as they vaporize. Then dissolve a weight of ash in a given volume of a strong acid like hydrochloric and/or a chelating agent like EDTA or glacial acetic acid. Dilute by known volume and run through a ICP or AA.
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