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  • 02월 28일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제123회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Graphene oxide as a peroxidase mimetic catalyst for detection of Cr(VI) ions

등록일
2019년 2월 13일 12시 31분 02초
접수번호
5023
발표코드
ANAL1.O-18 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
목 10시 : 08분
발표형식
구두발표
발표분야
Analytical Chemistry - Oral Presentation of Young Analytical Chemists I
저자 및
공동저자
Nguyen Ngoc Nghia, Huy B.t.1, Yong-ill Lee1,*
Changwon National University, Korea
1Department of Chemistry, Changwon National University, Korea
Graphene oxide (GO) was used as a peroxidase mimetic catalyst to detect hexavalent chromium (Cr(VI)) in aqueous solutions. The color change of tetramethyl benzidine (TMB) which was catalyzed by GO. The color of the probe will be turned “OFF” and “ON” by adding 8-hydroxyquinoline (8-HQ) and Cr(VI), respectively. The mechanism could be explained due to the chelation reaction between 8-HQ and Cr(VI). The color change can be observed by naked eyes or UV-vis spectrophotometer. Under the optimal experimental conditions, the prepared probe exhibited high selectivity, limit of detection (6 nM), and large linear range. This study was applied successfully for Cr(VI) detection in real water. Keywords: hexavalent chromium; chelate; graphene oxide; mimetic catalyst; naked eyes.

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