Over time, laws keeping toys safe for our children have evolved.
That means, in theory, toys you find at the thrift shop, yard sale or second hand store may harbor toxins that would not be legal in toys being sold new today. Now we have a study that proves this risk is more than theoretical.
Dr. Andrew Turner, of the University of Plymouth, led a study analyzing 200 used plastic toys that were gathered from "homes, nurseries, and charity shops." The collection included "cars, trains, construction products, figures and puzzles, with all of them being of a size that could be chewed by young children."
The toys were tested for the heavy metals arsenic (As), barium (Ba), cadmium (Cd), chromium (Cr), mercury (Hg), lead (Pb), antimony (Sb), and selenium (Se). The lab also evaluated bromine (Br) content, as an indicator of the presence of flame retardant chemicals.
With the exceptions of arsenic, mercury and selenium, each of the toxins was found in over 20 different toys with bromine, cadmium and lead posing the greatest exposure risks. In addition to testing for the presence of these metals and flame retardants, the lab evaluated the likelihood that a child who chewed off of these toys would end up with the toxins in their body: a property known as "migration." This test exposes the toys to acids that mimic stomach juices to see if the toxic chemicals migrate out of the toys (where they can then enter the child's bloodstream and accumulate in the body).
Even respectable toy companies were not exempt from the findings of hazard: cadmium released from yellow and red LEGO® bricks exceeded limits now required under the European Toy Safety Directive, introduced in 2009.
How to reduce the risk and still reuse toysThere are steps you can take to reduce the risks for your kids and still teach them to value second hand items:
- Look for toys that were advertised as exceeding the standards when they were sold new -- especially brands recognized as eco-toys or higher-end products which you can now afford at their second hand prices.
- Select toys that were made from natural materials, avoiding the hazards of older plastics.
- Keep high risk toys, like older lego sets, out of the reach of younger children likely to put the toys in their mouths; the older kids can still have fun with these.
The full study was published in Environmental Science and Technology: Concentrations and migratabilities of hazardous elements in second-hand children’s plastic toys.