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  • 09월 05일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제120회 대한화학회 학술발표회, 총회 및 기기전시회 Identification of behavior of synthesized Sm2O3 particles in goldfish

2017년 8월 24일 16시 03분 34초
ANAL2.O-20 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 09시 : 54분
Analytical Chemistry - Oral Presentation of Young Analytical Chemists II
저자 및
Bobae Kim, Jaeyeong Choi, Chul-Hun Eum1, Seungho LEE*
Department of Chemistry, Hannam University, Korea
1Mineral Resources Research Division, Korea Institute of Geoscience and Mineral Resource, Korea
Rare-earth nanoparticles are generally harmless in the environment, and could be utilized as a tracer for circulation process of nature. The rare-earth nanoparticles can be identified (or analyzed) by gamma ray irradiation, as they are decomposed by the gamma ray irradiation to yield radioactive rare-earth isotopes, producing their own characteristic signals. Gamma-ray irradiation is known to be highly sensitive for analysis of samples of trace concentrations. In this study, samarium oxide (Sm2O3) nanoparticles were synthesized by a sono-chemical method, and were analyzed using various techniques including asymmetrical flow field-flow fractionation (AsFlFFF), dynamic light scattering (DLS), energy dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD) and inductively coupled plasma-mass spectroscopy (ICP-MS). AsFlFFF and DLS were used to determine the size distributions of the Sm2O3 particles. EDX and XRD were used to determine the chemical composition of nanoparticles. The presence of samarium was confirmed by the XRD and EDX results. The AsFlFFF and DLS results showed the Sm2O3 nanoparticles have sizes ranging about 20 ~ 30 nm. The Sm2O3 nanoparticles were fed to gold fish, then the concentration of the particles in various organs of the gold fish were analyzed using ICP-MS.