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The study of change in chemical conpositious of ancient glasses found in Eastern Asia.

东亚古代玻璃化学成分变化的研究。

基本信息

批准号：
06834015
负责人：
KOEZUKA Takayasu
金额：
$ 1.34万
依托单位：
Nara National Cultural Properties Research Institute
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1994
资助国家：
日本
起止时间：
1994 至 1995
项目状态：
已结题

来源：
https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-06834015/
关键词：
Potash glass Lead glass YAYOI period Lead isotope ratios Bronze KOFUN period アルカリ珪酸塩ガラス鉛珪酸塩ガラスカリガラスソーダ石灰ガラス

项目摘要

The study of the change in chemical compositions of ancient glasses found in Japan as well as the comparison of the obtained results with that of China and Korea is one of the important subjects to understand the influence of these foreign countries on Japanese glass-producing technique.The glass samples (mainly glass beads) were collected from about fifty archaeological sites in Japan, covering periods from 2nd century B.C.to the end of the 8th century A.D.The quantitative analysis of more than eight hundred glass samples were mainly performed by using a micro-focused energy dispersive X-ray fluorescence spectrometry with FP method. Besides, the inductive coupled plasma emission spectrometry and the atomic absorption spectrometry were also used for some samples.The corrosion products and the weathering surface layrs of glass samples were preliminary removed from the small examining area for the analysis.The lead isotope ratio of some glasses found in Japan were also measured. The data have been cross-checked with that of glasses or lead ores in China and Korea, known to have been produced in the past.Our results clarified the following facts :1) The distinctive glass systems at periods from ca.2nd century B.C.to the 3rd century A.D.were K_2O-SiO_2, PbO-BaO-SiO_2 and PbO-SiO_2. Two systems of soda-lime glass (Na_2-CaO-SiO_2 and Na_2O-Al_2O_3-CaO-SiO_2) appeared after the late 3rd century A.D., whereas two systems of before-mentioned lead glass disappeared. The PbO-SiO_2 system reappeared since the late 6th century, and produced in Japan for the first time.2) Many glass producing relics (dated as the end of 7th century) were excavated at the lead-glass producing site found for the first time in Japan. The results of our analysis showed that these glasses were the first lead-glass produced in Japan.

研究日本古代玻璃的化学成分变化，并将其与中国和朝鲜的玻璃化学成分进行比较，是了解这些外国对日本玻璃生产技术影响的重要课题之一。这些玻璃样品（主要是玻璃珠）是从日本大约50个考古遗址中收集的，时间从2世纪B.C.to。公元世纪，800多个玻璃样品的定量分析主要是通过使用微聚焦能量色散X射线荧光光谱与FP方法进行的。此外，还对部分样品进行了电感耦合等离子体发射光谱和原子吸收光谱分析，并初步去除了小范围内玻璃样品的腐蚀产物和风化表层进行了分析，对日本发现的部分玻璃样品进行了铅同位素比值的测定。我们的结果澄清了以下事实：1）从公元2世纪到公元3世纪的玻璃系统有K_2 O-SiO_2、PbO-BaO-SiO_2和PbO-SiO_2。B.C.to公元世纪后出现了Na_2-CaO-SiO_2和Na_2 O-Al_2 O_3-CaO-SiO_2两种钠钙玻璃体系，而上述铅玻璃的两个系统消失了。PbO-SiO_2系统自世纪后期重新出现，并首次在日本生产。2）在日本首次发现的铅玻璃生产遗址中，出土了大量的7世纪末的玻璃生产遗物。我们的分析结果表明，这些玻璃是日本生产的第一批铅玻璃。