The purpose of this new technology is to immobilize chromium, which can avoid the secondary pollution so as to make tannery sludge innocent and use it as a resource.

Industrial pollution in our town had supposedly turned students into living science experiments breathing in a laboratory's worth of heavy metals like manganese, chromium and nickel each day.

As with all TVs, LCDs have plastic shells treated with brominated flame retardants and wiring that has various toxic heavy metals such as cadmium, chromium, antimony and beryllium.