…It is also called a bead reaction. It utilizes the fact that metal oxides or salts dissolve and color the glass-like beads that are formed by igniting borax (Na 2 B 4 O 7 ・10H 2 O) or phosphate salt (sodium ammonium hydrogen phosphate) (NaNH 4 HPO 4 ・4H 2 O). The bead test uses borax as the bead, and the phosphate bead test uses phosphate salt. First, a platinum wire with a tip wound into a ring shape with a diameter of about 3 mm is ignited with a burner, and borax or phosphate salt powder is attached to it and heated again. … *Some of the terminology that refers to "borax bead test" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…溶球反応bead reactionともいう。ホウ砂Na2B4O7・10H2Oまたはリン塩(リン酸水素アンモニウムナトリウム)NaNH4HPO4・4H2Oを強熱してできるガラス状の溶球に金属酸化物または塩類が溶けて着色することを利用するもので,溶球にホウ砂を用いるものをホウ砂球試験borax bead test,リン塩を用いるものをリン塩球試験phosphate bead testという。まず,先端を直径3mm程度の環状に巻いた白金線をバーナーで強熱し,これにホウ砂またはリン塩の粉末を付着させて再び熱する。… ※「borax bead test」について言及している用語解説の一部を掲載しています。 出典|株式会社平凡社世界大百科事典 第2版について | 情報 |
A traitorous minister of the Northern Song Dynasty...
Paros is a Hellenistic island in the Cyclades. It...
...This system is necessary to allow the Supreme ...
A large fern with an upright, tall stem that is wi...
An Imperial envoy sent from the Imperial Court to ...
...There is a considerable movement of population...
A type of board game played by two people. It is ...
?-1582 A military commander from the Sengoku to O...
Based on the fact that various differences exist ...
…It refers to a mixture of spices that is used ma...
A critical essay by Kobayashi Hideo about Japanese...
This is a collection of essays by Nakae Chomin, w...
A common name for amateur radio operators. Qualifi...
Year of death: August 13, Genroku 12 (September 6,...
...Population: 187,000 (1991). The name of the ci...