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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Finding an optimal temperature able to improve accuracy for Raman spectroscopic identification of adulterated olive oils

2015년 9월 3일 11시 19분 11초
ANAL2.O-13 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 15시 : 18분
분석화학 - Oral Presentation of Young Analytical Chemists II
저자 및
류동현, 정회일*
한양대학교 화학과, Korea
Identification of adulterated olive oils is critically demanding for its fair product value evaluation. For fast and simple identification, Raman spectroscopy could be a proper candidate since it provides rich structural information of components and the spectral acquisition is non-destructive without requiring further sample pretreatments. Since molecular vibrations of components diversely vary according to temperature, an optimal temperature able to provide enhanced spectral difference between pure and adulterated olive oils would exist. For the study, adulterated extra virgin olive oil mixed with soybean oils was initially prepared. Then, a glass vial containing a sample was initially immersed in liquid nitrogen for sufficient cooling and the vial containing the sample was quickly taken out for continuous Raman spectral collection during natural temperature elevation up to near room temperature. During the temperature elevation, 50 snapshot spectra were collected. Using spectra collected at each snapshot, the identification of adulterated olive oils was attempted and a snapshot providing most discriminant spectral feature was found. The varied spectral feature at the optimal temperature was explained.