Mercury in Europe

Source: Source Control on Priority Substances in Europe (SOCOPSE), 2009. Material Flow Analysis on Priority Substances.

This Material Flow Analysis Diagram shows Mercury flows in Europe.  The diagram does not represent a system boundary, nor imports, though there is an interesting twist.  The diagram colors the Mercury flows leaving processes into the environment by the destination of the flow.  The technique enhances readability, as most processes emit to more than one destination.