초록문의 abstract@kcsnet.or.kr

결제문의 member@kcsnet.or.kr

현재 가능한 작업은 아래와 같습니다.
  • 09월 04일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제114회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Size analysis of metal-oxide nanoparticle using Field-Flow Fractionation

2014년 9월 4일 16시 26분 30초
ANAL.P-595 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
10월 15일 (수요일) 16:00~19:00
저자 및
김소리, 유영석, 최재영, 이승호*
한남대학교 화학과, Korea
Metal nanoparticles are becoming increasingly popular for treatment of contaminated soil and groundwater. It is known that the aggregation of metal nanoparticles is affected by the environmental condition. Thus, in order to understand behavior of metal nanoparticles in environment, stability of the particles needs to be studied. Field-flow fractionation (FFF) is a family of analytical separation techniques that can be applied for separation and characterization of various types of nanoparticles. FFF have some potential advantages over chromatographic techniques. Separation in FFF is achieved solely through the interaction of the sample components with an external physical field. There is no stationary phase. This allows us to avoid variety of problems caused by non-specific interaction between the sample components and the column-packing materials. Also the accessible range of information is broad, and often complimentary when various members of FFF family are employed together, so that even complex systems with broad size distributions, heterogeneous mixtures or strongly interacting systems can be analyzed. In this study, metal nanoparticles of various types were analyzed using various techniques including asymmetrical flow FFF (AsFlFFF), sedimentation FFF (SdFFF), and dynamic light scattering (DLS). In FFF, strength of the external field and flow rate were optimized for FFF analysis. Also the behavior of the metal nanoparticles was systematically investigated as a function of the type of dispersing agent and the ionic strength of the medium.