Scientific Studies on Glazed Ceramics about Provinance and Manufacturing Technique

1.对包括铅在内的8℃到10℃的青釉陶瓷进行了如下分析：(1)建立了高频加热化学分离铅同位素分析的新方法。(2)青釉中铅的同位素比值在统计学上是一致的，与日本首次发行的12种硬币中的铅同位素比值一致。这些数据表明，这些样品中的铅是在一个矿山采集的。(3)山口长野老矿废墟中出土的铅和铅渣的同位素比值与青釉和Kocho-12-sen的一致。我们估计这个矿为他们提供了铅。对Seto、Mino和Karatsu的17C到19C的釉瓷进行了如下分析；结果表明：(1)主要元素组成，如Si、Al、K、Fe等主量元素的含量，在Karatsu和Mino-Seto陶瓷体中是不同的；(2)用最小造型Karatsu陶瓷制得的“Mino-Karatsu”瓷体中铁的含量与Karatsu陶瓷相似，而其他主要成分与普通Mino陶瓷相同；(3)Karatsu、Mino和Seto陶瓷的釉料中，Fe、Ca、K等常量元素组成明显不同。根据釉的颜色对陶瓷进行了分组，测量结果与这一组一致。

1. Green glazed ceramics, 8C.to 10C., including lead were analyzed as follows ;(1) A new chemical separation method for lead isotope analysis using high frequency heating were developed.(2) All the lead isotope ratio in the green glaze was statistically same and it agreed with those in Kocho-12-sen, 12 kinds of Japanese firstly issued coins. These data show that the lead in these samples was collected at one mine.(3) The isotope ratios of lead and lead slag unearthed from the ruins of Naganobori old mine, Yamaguchi-pref., agreed with those of the green glaze and Kocho-12-sen. We estimated that this mine had supplied lead for them.2. Glazed ceramics, 17C.to 19C., in Seto, Mino and Karatsu were analyzed as follows ;(1) Major element composition, e.g.Si, Al, K,Fe, were different between the bodies of the ceramics in Karatsu and Mino-Seto.(2) Iron content in bodies of "mino-karatsu", produced in Mino modeling Karatsu ceramics, was similar to those in Karatsu ceramics, however other major composition was same as ordinary Mino ceramics.(3) Major element composition, e.g.Fe, Ca, K,was obviously different among the glaze named Kaiyu and Chosekiyu of the ceramics in Karatsu, Mino and Seto.(4) Glaze color of Karatsu ceramics were observed by a luminance colorimeter. The ceramics had been grouped according to the color of glaze, and the results of this measurements were in accordance with this group.