Survey on an Old ＂Glistening Technology＂ on Gold and Silver Gilt in Chinese Three Gorges Region during Han Dynasty

Three copper wares of Han Dynasty, decorated with golden and silvery pattems in Chongqing Municipal, Three Gorges Region, were analyzed by SEM （scanning electron microscope） and EDAX （energy dispersive X-ray analysis）. The results reveal that mercury was used to melt gold or silver to form amalgam as late as Chinese Han Dynasty. Ancient craftsmen sheared gold foils to attain tiny gold trips that make them easy to melt into liquid mercury. After gilded, artefacts were well polished to show the brilliance of gold. As an important discovery, the silver amalgam was also detected on one copper ware. It is worth noting that silver was mixed with gold in liquid mercury to form silver amalgam which is apt to form amalgam and make silver amalgam layer stick to bronze surface tightly. This successful technology is derived from a prolonged accumulation of Chinese craftsmen on mining and metallurgical handicraft,

两件西汉时期鎏金与鎏银青铜器镀层中的金属化合物

采用金相显微分析、环境扫描电子显微镜、X射线衍射、X射线荧光对两件西汉时期的鎏金与鎏银青铜马镳进行了分析 ,揭示了西汉时期鎏金与鎏银青铜器的部分金相学特征和部分金属化合物 ,研究结果表明我国西汉时期已采用了金汞齐与银汞齐在铅锡铜合金表面火法鎏金和鎏银技术。

高压釜消解-ICP-OES法测定印刷线路板中多种重金属元素

研究用高压釜消解-ICP-OES测定印刷线路板中重金属元素Pb,Cd,Hg,Cr,Au,Ag的含量。结果表明,方法灵敏、快速、准确、操作方便,实用性强。Pb,Cd,Hg,Cr,Au,Ag的回收率在94.0%～105.0%之间,相对标准偏差RSD<5%。