分析化学
Print ISSN : 0525-1931
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有機蛍光色素のソルバトクロミズムを利用する油中水分の測定
加藤 亮長坂 隆広周 紅波孫 尚鉉服部 敏明山田 幸司
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2011 年 60 巻 6 号 p. 521-526

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A method for simply measuring water mixed into oil is restricted. In the present study, we synthesized a solvatochromic organic fluorescence dye. Changes in the fluorescence spectra and the luminescent color to change of the amount of water in the oil of this fluorescence dye were investigated. In dioxane, which is a low dielectric constant solvent, the color changed from green to yellow and a bathochromic shift of the fluorescence spectra was observed by the increase in moisture. These results suggested that the water selectively solvated to the fluorescence dye. On the other hand, in acetonitrile, which is a high dielectric constant solvent, the bathochromic shift observed by the increase in water showed almost the same tendency as the bathochromic shift accompanying the increase in the dielectric constant. However, the color showed only yellow in a visible observation. The visual detection of water will be applied to some low-dielectric organic solvents and lubricating oils.

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© The Japan Society for Analytical Chemistry 2011
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