2014年9月6日     The Economist

Excerpt from an article in The Economist Technology Quarterly:

According to a United Nations initiative known as StEP (Solving the E-Waste Problem), electronic waste can contain up to 60 elements from the periodic table, as well as flame retardants and other nasty chemicals. Apart from heavy metals such as lead and mercury, there are quantities of arsenic, beryllium, cadmium and polyvinyl chloride to be found. All of these pose hazards to the health of those handling them.