- 著者
- Naoya KAKIUCHI Junya OCHIAI Masaki TAKEUCHI Hideji TANAKA
- 出版者
- The Japan Society for Analytical Chemistry
- 雑誌
- Analytical Sciences (ISSN:09106340)
- 巻号頁・発行日
- vol.37, no.1, pp.3-5, 2021-01-10 (Released:2021-01-10)
- 参考文献数
- 11
- 被引用文献数
- 2
We propose a novel concept for detecting color transition by the inner product (IP) of RGB unit vectors. A digital microscope-based detector and a Visual Basic program were developed in-house. The concept is applied to indicator-based flow titration. The IP is 1 or < 1 if the vector’s direction is the same or different, respectively. The IP’s change can be used as a criterion for the indicator’s color transition. The present IP-based approach is simple, economical, and versatile because it is applicable to any color transition without selecting an analytical wavelength.