mercury

Metals and selenium are found in the environment in various different compounds. Their geogenic concentrations (background concentrations ) vary. Some metals and selenium are essential for organisms at low concentrations.

Batteries are ubiquitous nowadays and enable us to use many different kinds of mobile devices independently of the power grid. The environmental and resource relevance of batteries stems from the valuable and hazardous substances they may contain. Hence under no circumstances should batteries ever be disposed of with household waste.