古代青铜器基体与其锈蚀产物铅同位素对比研究  

Comparative studies on Pb isotope ratios of corrosion rinds and metal cores of bronze vessels

作　　者：魏国锋[1] 秦颍[1] 王昌燧[1] 李清临[1] 张爱兵[2] 宫希成[3] 

机构地区：[1]中国科学技术大学科技史与科技考古系,安徽合肥230026 [2]安徽大学历史系,安徽合肥230039 [3]安徽省文物考古研究所,安徽合肥230000

出　　处：《中国科学技术大学学报》2006年第7期771-774,792,共5页JUSTC

基　　金：国家自然科学基金重点项目(10135050);国家社科基金文博类2001年重点项目(2001042)资助

摘　　要：利用Finnigan MAT262质谱仪和ICP-AES测试了不同地区出土的青铜样品的锈蚀产物和基体的铅同位素比值及其化学成分,以研究铅同位素在青铜器腐蚀过程中是否发生变化,以及是否存在因不同产地铅料混用引起的混合不均匀现象.结果初步显示,铅同位素组成不受青铜器锈蚀的影响,可以用锈蚀产物的铅同位素比值代替其基体的;同时,不同产地铅料在青铜器中的混用且又混合不均,可能造成青铜器基体的铅同位素比值和锈蚀产物的明显不同.Corrosion rinds on bronzes vessels were studied by ICP-AES and Finnigan MAT262 mass spectrograph to determine whether Pb isotope compositions of corrosion rinds were perceptibly changed in the process of corrosion. It is found that Pb isotope compositions of the corrosion rinds are similar （within experimental error） to those of the metal cores of the bronze and that corrosion rinds may be used to study the provenance of ancient bronzes without compromising their integrity. Meanwhile, the result implies that the uneven mixture of lead from the different origins might also lead to the variation of Pb isotope composition between the corrosion rinds and metal cores of the bronze vessels.

关 键 词：铅同位素 青铜器 锈蚀产物 矿料来源 

分 类 号：K85[历史地理—考古学及博物馆学]