…This periodic precipitation phenomenon is called the Liesegang phenomenon. Also, because the precipitate layers are circular, they are commonly called Liesegang rings. This phenomenon can be observed with a wide variety of combinations of substances if the appropriate conditions are met. For example, substances that form periodic precipitates in gelatin include barium chromate, lead carbonate, silver carbonate, lead phosphate, cobalt phosphate, silver iodate, and all insoluble mercury salts. … *Some of the terminology that mentions "Liesegang ring" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…このような周期的沈殿現象をリーゼガング現象と呼ぶ。また,このような沈殿層が環状を呈するので,一般にリーゼガング環Liesegang ringとも呼ばれている。この現象は,適当な条件が満たされれば,かなりいろいろな物質の組合せで観察され,たとえばゼラチン中で周期沈殿をつくるものには,クロム酸バリウム,炭酸鉛,炭酸銀,リン酸鉛,リン酸コバルト,ヨウ素酸銀,およびすべての不溶性水銀塩などがある。… ※「Liesegang ring」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 |
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