广西合浦堂排西汉古玻璃的铅同位素示踪研究

A Study on ancient glass of Western Han Dynasty from Tangpai,Hepu,Guangxi by the lead isotopic technique

应用Ｘ衍射、Ｘ荧光光谱分析法研究了广西合浦堂排西汉古玻璃的物理和化学特征。用高精度质谱仪测定其铅同位素比值后，与国际数据对比分析，确证该类高钾低镁玻璃是用中国的矿料制成，排除了由欧洲及其它地区输入的可能，成为继国内外学者公认的Ｐｂ－Ｂａ玻璃最早产于中国之后又一种具中国地方特色的早期古玻璃。

The ancient glaze of Western Han Dynasty from Tangpai,Hepu,Guangxi has been investigated by XRD,XRF methods.The XRD results showed that the glaze was real glass with the index of refraction in a range of 1.473-1.479,while the XRF analysis indicated that the contents of SiO2,KZO,CaO,Al2O3,Mgh and Na2O in the glass corresponded to 75.8%-79.0%,10.4%-14.5%,1.3%-2.1%,1.9%-2.7%,0.22%-0.50% and 0.21%-0.87% respectively,belonging to the Si-K vityeous system.The values of 207Pb/206Pb and 208Pb/206Pb in the range of 0.8746-0.8953 and 2.142-2.178 respectively,were close to the distribution of other Chinese early glass,but far from that of the European and Egyptian ones.Therefore,a conclusion can be reached that Si-K glass of Tangpai was made in China and impossible from foreign countries.