How to detect the toxicity of plastic toys?

I bought a lot of plastic building blocks and prepared to take them home. I was worried that putting them at home would affect the health of their elders. I didn't pay attention to the packaging and identification of plastic types when I bought too much. Some of them were scattered.


Will these building blocks be placed on the table top of the room in large areas to cause harm to human body?


Is there a way to test the toxicity of these plastics? How to avoid it? Is it useful to plant green plants nearby thank you!