Several toys on the shelves of Long Island stores contain toxic heavy metals that could be dangerous to children, according to a new report.

Clean and Healthy New York and the New York League of Conservation Voters Fund tested dozens of toys that are sold at popular stores like Wal-Mart, Target and Party City. Among the findings: arsenic was detected in a jewelry-making set, cadmium was found in toy cars and lead was found in jewelry. All of the items tested were found at stores on Long Island.

The examiners who conducted the study say they used an X-ray fluorescence analyzer to identify the toxic substances, which also included mercury and antimony. The report notes, "These chemicals are dangerous, unnecessary and pose health risks to children like cancer, lower IQ scores and organ damage."

Dr. William Spencer, a pediatrician and Suffolk County legislator, says the effects of such toxic substances aren't always seen right away but the impact can last a lifetime.

Most of the products do not come with warning labels, but experts say one thing to look for is products that are labeled "for adults only."

The authors of the report are calling on lawmakers to ban the sale of children's items containing the dangerous substances.