On-site analysis of Islamic glass excavated in the Sinai Peninsula by a portable X-ray fluorescence spectrometer for classification of glasses based on their chemical compositions

ポータブル蛍光X線分析装置を用いるシナイ半島出土ガラスのその場分析と化学組成による特性化 [in Japanese] On-site analysis of Islamic glass excavated in the Sinai Peninsula by a portable X-ray fluorescence spectrometer for classification of glasses based on their chemical compositions [in Japanese]

- 沢田貴史 SAWADA Takashi
- 東京理科大学理学部応用化学科 Faculty of Science, Tokyo University of Science
- 保倉明子 HOKURA Akiko
- 東京理科大学理学部応用化学科 Faculty of Science, Tokyo University of Science
- 山田祥子 [他] YAMADA Shoko
- 東京理科大学理学部応用化学科 Faculty of Science, Tokyo University of Science
- 中井泉 NAKAI Izumi
- 東京理科大学理学部応用化学科 Faculty of Science, Tokyo University of Science
- 真道洋子 SHINDO Yoko
- 財団法人中近東文化センター The Middle Eastern Culture Center in Japan

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Author(s)

- 沢田貴史 SAWADA Takashi
- 東京理科大学理学部応用化学科 Faculty of Science, Tokyo University of Science
- 保倉明子 HOKURA Akiko
- 東京理科大学理学部応用化学科 Faculty of Science, Tokyo University of Science
- 山田祥子 [他] YAMADA Shoko
- 東京理科大学理学部応用化学科 Faculty of Science, Tokyo University of Science
- 中井泉 NAKAI Izumi
- 東京理科大学理学部応用化学科 Faculty of Science, Tokyo University of Science
- 真道洋子 SHINDO Yoko
- 財団法人中近東文化センター The Middle Eastern Culture Center in Japan

Abstract

ポータブル蛍光X線分析装置を用いて，エジプト・シナイ半島の遺跡から出土したイスラーム・ガラスの非破壊分析を現地にて行った．定性分析の結果，無装飾ガラスはMn，Br，Sr，Pbの含有量に類似性のある幾つかのグループに分類できることが分かった．223点の出土ガラスについて化学組成による分類を試みたところ，K，Ca強度比とSrO濃度によって分類することができた．Srはガラス原料である砂や植物に含まれている元素であり，イスラーム・ガラスを化学組成からナトロン・ガラスと植物灰ガラスに分類する新たな指標となる可能性が示唆された．また，TiとSrの濃度を指標とする分類によっても，アルカリ成分と同様の分類傾向が見られた．

Glass samples (8th∼12th century A.D.) excavated from archaeological sites (Raya and Wadi al-Tur) of Islamic periods in the Sinai Peninsula of Egypt were analyzed in situ by a portable XRF spectrometer developed by our group. It was found that the content of Mn, Br, Sr, and Pb was useful to classify the non-decorated glass fragments. A total of 223 fragments of Islamic glass could be classified into the natron glasses (n = 127) and plant ash glasses (n = 96) based on their SrO vs. K/Ca plots. It is suggested that the content of Sr can be used instead of Mg in classifying Islamic glasses. In addition, it was found that TiO2 vs. SrO plot was also useful for classifying Islamic glasses.

Journal

BUNSEKI KAGAKU

BUNSEKI KAGAKU 53(3), 153-160, 2004-03-05

The Japan Society for Analytical Chemistry

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