...A method for quantifying and identifying substances based on the intensity and wavelength of light absorption when transparent or translucent gases, liquids, or solids absorb light. A spectrophotometer is used for measurement, which consists of a light source, a spectroscope, and a light detection device, and the sample is inserted somewhere between the light source and the light detector. A stable incandescent lamp or gas discharge tube is used as the light source, and a prism, filter, and diffraction grating are also used in the spectroscope for spectral separation. A photocell or photomultiplier tube is also used as the light detector. *Some of the terminology explanations that mention "absorptimetry" are listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…透明ないし半透明の気体,液体,固体が光を吸収するとき,その吸収の強度と波長から物質の定量・同定を行う方法。測定には分光光度計が用いられるが,これは光源,分光器,および光検出装置から成り,試料は光源から光検出器までのどこかに挿入される。光源は安定性のよい白熱ランプや気体放電管が用いられ,分光器にはスペクトル分離のためのプリズム,フィルター,回折格子が併用されている。また光電池や光電子増倍管が光検出器に利用される。… ※「absorptimetry」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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