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  • 09월 04일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Quantitative analysis of diaquat in drinking water using SERS-based microdroplet sensor

등록일
2014년 9월 4일 14시 55분 15초
접수번호
1480
발표코드
ANAL.P-591 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
발표시간
10월 15일 (수요일) 16:00~19:00
발표형식
포스터
발표분야
분석화학
저자 및
공동저자
Rongke Gao, 주재범1,*
한양대학교 바이오나노학과, China
1한양대학교 생명나노공학과, Korea
We present a fast and sensitive trace analysis of diaquat dibromide monohydrate (DQ) in water using a surface-enhanced Raman scattering (SERS)-based microdroplet (MD) sensor. This sensor is composed of two compartments, the first being for droplet generation for fresh silver nanoparticle (AgNP) synthesis, and the second for droplet merging for SERS detection. AgNPs were grown in droplets, and then each droplet was synchronously merged with another droplet containing DQ for SERS detection. This microdroplet system prevented memory effects caused by the precipitation of nanoparticle aggregates on channel walls because the droplets were isolated by oil phase. The limit of detection (LOD) of DQ in water was determined to be below 5 nM, which satisfies the maximum contaminant level defined by the United States EPA. This SERS-based integrated sensing system is expected to be useful as an in-the-field sensing platform for fast and reproducible trace analysis of environmental pollutants in water.

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