The Associated Press reports that tests on 1,200 children's products -- most of which are available for sale -- revealed that 35% contain more lead than allowed by federal recall standards used for lead paint. Lead poisoning can cause irreversible learning disabilities and behavioral problems and, at very high levels, seizures, coma, and even death

Of the toys tested from the shelves of Wal-Mart Stores Inc. (NYSE: WMT), Toys "R" Us and Babies "R" Us, here are three that had particularly high lead levels:

• A Hannah Montana card game case,
• a Go Diego Go! backpack; and
• Circo brand shoes.

In an effort to better understand the lead-in-toys scandal, I had a chance today to talk to an industry expert on the topic. Dr. Marcia Stone holds a Ph.D. in Organic Chemistry and is Founder/President of Hybrivet Systems, a manufacturer of lead-testing equipment for industry and home use. She has worked in the lead testing field for 15 years.

I asked Dr, Stone why manufacturers would use lead paint? She explained that "Lead in paint provides a hard, glossy, pretty finish, the reason it was once used extensively in expensive housing. Leaded paint is also easy to work with and inexpensive."

What lead-containing products have you found on American shelves that consumers should be concerned about?
"The scandal over lead in children's jewelry is not over; we continue to find these products for sale," said Stone. She told me manufacturers will use a core of lead in cheap jewelry and cover it with nickel plating or paint, or use a solder containing lead in its construction. Children often chew on their jewelry, and as little as three milligrams of lead, about the size of three grains of sugar, can kill a child. Since lead has a sweet taste, the propensity for children to ingest it is even greater.