珪酸塩岩石試料の主成分の蛍光X線分析 : 低希釈率ガラスビードの作成と迅速分析の精度
スポンサーリンク
概要
- 論文の詳細を見る
In order to analyze both major and trace elements on a single pellet, it is necessary to prepare a glass bead of as high ratio of sample to flux as 1 : 2. In our laboratory, we determined the operating condition of the bead sampler (Philips-Japan NP1234) by which a glass bead is made under the temperatures less than 1150ーC and the duration of 10 minutes. The weight loss of the bead during the fusion is less than 1%. Vaporization of elements during the fusion is tested to be negligible except for potassium, X-ray intensity of which becomes remarkably lower as the weight loss of the bead increases, so the extent of weight loss must be controlled to be equal among the glass beads. We tested the reproducibility of X-ray intensities on many glass beads and by repeated analyses using the analyzer Philips PW2400 of Shinshu University. A rapid analysis becomes possible with sufficient accuracy, the total time for the analysis of one sample being about 6 minutes. With usage of the Geological Survey of Japan standard rocks as standards, calibration lines are obtained and accuracy of the analysis is shown in Table4.
- 信州大学の論文
著者
関連論文
- 浅間火山2004年9月の噴出物の石基ガラスの含水量測定
- 浅間火山2004年噴火噴出物の鉱物粒径分布とマグマの結晶化過程
- 浅間火山2004年9月噴火の本質噴出物について(2004年浅間山噴火(1))
- P42 浅間火山2004年噴火噴出物の鉱物粒径分布とマグマの結晶化過程(日本火山学会2005年秋季大会)
- O-198 浅間火山2004年9月1日の本質噴出物中に見られる縞状構造(18.噴火と火山発達史,口頭発表,一般講演)
- 珪酸塩岩石試料の主成分の蛍光X線分析 : 低希釈率ガラスビードの作成と迅速分析の精度
- 64. 第12次野尻湖発掘の地質学的成果