First, there are heavy metals and light metals. The chemical standard for distinguishing heavy metals from light metals is 4.5g/cm3, which is greater than heavy metals and less than light metals. But heavy metals in chemistry are different from those in biology.

Heavy metals in organisms refer to substances with biological toxicity. However, chemical heavy metals are not all biotoxic, such as Fe; Chemical light metals are also biologically toxic, such as Al and Ba.

If you work there, you must take protective measures and wear dust-proof clothes, dust-proof hats and dust-proof shoes.

Of course, don't forget to bring a dust mask. Remember to drink water and wash your hands before eating. In addition, drinking more white sugar water can also detoxify.

Proper protective measures, in fact, do not worry too much.