Abstract
In this paper, we analyzed the material flow and emission of lead in Japan, Thailand and Philippines quantitatively. As a result, we revealed that approximately 70% of lead in used products is recovered in Japan, and approximately 90% of lead is recovered in Thailand and Philippines. In addition, the main source of lead emission into the air and water is refining and stock , and the volume of emission from illegal sectors in Thailand is large, therefore, human health risk should be concerned in local and regional areas in Thailand.