... All of the above mentioned ones use color change, so they can be collectively called color indicators. When we say indicator, this is what is usually meant, but there are many other types as well, and fluorescence indicators are ones that use the appearance, disappearance, or change of fluorescence to determine the end point. Compounds such as those shown in Table 3 emit fluorescence of different colors in the acid and base forms, so the end point of a neutralization titration can be determined from the change in fluorescence based on the exact same principle as acid-base indicators. ... *Some of the terminology that refers to "fluorescence indicator" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
… これまでに挙げたものはすべて色の変化を利用したものであるから,まとめて呈色指示薬ということができる。指示薬といえば通常これを意味することが多いが,それ以外にもいろいろなくふうがなされていて,蛍光の発生,消滅あるいは変化によって終点を知ろうとするものが蛍光指示薬fluorescence indicatorである。表3に示したような化合物は酸形と塩基形で異なった色の蛍光を発するので,酸塩基指示薬とまったく同様の原理に基づいて蛍光の変化から中和滴定の終点を知ることができる。… ※「fluorescence indicator」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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