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학술발표회초록보기

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  • 09월 20일 16시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제126회 대한화학회 학술발표회 및 총회 New named "Spectrator" as a device for the determination of titration end-points

등록일
2020년 9월 9일 17시 40분 44초
접수번호
0927
발표코드
ANAL.P-267 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 21일(수) 17:00~17:30
발표형식
포스터
발표분야
Analytical Chemistry
저자 및
공동저자
Jiwon Shin, Gyoyoon Chae, Yejin Park, YeaJin Kim, Won-Seok Chae*
Division of Life Science and Chemistry, Daejin University, Korea

Many chemical reactions on a titration are including the change of not only potentials but also colors.  In a potentiometric titration, it is obtained as a titration curve by measuring the abrupt change of the potential at the end-point. An acid-base titration is generally done by observing the color change caused by an indicator to determine the end-point. The method of determining the end-point by measuring the potential difference has been well established and commercialized, but there are not many devices that obtain the end-point by observing the change in color. A simple and precise spectral end-point detector can be manufactured by using a drop-counter consisted of IR-LED and –detector, a white light LED as the light source and a photo-detector, and an AD-converter(Arduino).  Spectrator showed excellent results in terms of the reproducibility in acid-base titration using an indicator and in iodometric titration without an indicator. We intend to share the results of the Spectrator manufacturing process and the experiment using it.


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