Abstract
This paper examines the traceability of resource movement across borders by quantifying the global flow of base metals (Fe, Al, Cu, Pb, and Zn) through the used passenger car trade in 2005 using trade statistics and vehicle composition data. An estimation method was developed to deal with the often problematic issues associated with trade statistics. This estimation shows that 3:4 � 10 6 metric tons of Fe, 3:1 � 10 5 metric tons of Al, 7:5 � 10 4 metric tons of Cu, 3:2 � 10 4 metric tons of Pb, and 2:7 � 10 4 metric tons of Zn in used passenger cars globally were not recycled in the country of origin, but rather moved in a global flow out of the country of manufacture. The destinations of these metals were mainly developing countries with rudimentary recycling technology. These results strongly indicate that in developed countries, many metal resources from automobiles that could have been utilized domestically were instead scattered and lost overseas. [doi:10.2320/matertrans.MBW200818]
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