Historical Study of Metal Transportation in East Asia Using Lead Isotope Method

通过<th>对青铜经盒、青铜寺钟、铅子弹、基督教器物等实物的铅同位素比值分析，发现10 ~ 17世纪日本铜铅的生产和运输情况已较为清楚。特别是16世纪以后<th>，铅的流通成为封建领主生产银和制造子弹的严重问题，外国铅对日本历史的影响极大，改变了日本历史的走向。

It was found that the production and transportation of copper and lead in Japan during the 10 to 17^<th> centuries became clear by the analysis of lead isotope ratios of practical objects such as bronze sutra cases, bronze temple bell, lead bullets and Christian objects and others. Especially after the 16^<th> century, lead circulation was so serious problem for the feudal lords to produce silver and to use it for the gun bullets, that the effect of foreign lead on Japanese history was extremely large and the effect changed the Japanese history to new course.