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  • 02월 19일 10시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제121회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Colorimetric detection of Cr(VI) using graphene oxide as a peroxidase mimetic catalyst

등록일
2018년 2월 7일 15시 24분 00초
접수번호
6618
발표코드
ANAL2.O-19 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
금 10시 : 33분
발표형식
구두발표
발표분야
Analytical Chemistry - Oral Presentation of Young Analytical Chemists II
저자 및
공동저자
NGUYEN NGOC NGHIA, Huy B.T.1, YONG-ILL LEE1,*
Changwon National University, Korea
1Department of Chemistry, Changwon National University, Korea
A highly sensitive and selective detection of hexavalent chromium (Cr(VI)) was proposed using graphene oxide (GO) as a peroxidase mimetic catalyst. The blue colored free cation radicals were generated simply by an oxidation reaction of tetramethyl benzidine (TMB) which was catalyzed by GO. In the presence of 8-hydroxyquinoline (8-HQ), the radical consumption was monitored by the decrease of absorbance of TMB and then the recovery of blue color was observed by the addition of Cr(VI). The proposed probe exhibited high selectivity on Cr(VI) due to the formation of a chelate ring between 8-HQ and Cr(VI), inducing the recovery of the radical generation. Under the optimum experimental condition, the limit of detection was calculated to be 70 nM of Cr(VI). More importantly, this method was successfully applied to the detection of Cr(VI) in real water samples.

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