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제108회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Study on characterization of TiO2 colloids by combining Sedimentation Field-Flow Fractionation and Single-Particle Inductively coupled Plasma Mass Spectrometry

2011년 8월 1일 16시 52분 43초
Ⅳ-ANAL.P-217 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 <발표Ⅳ>
저자 및
김선태, 이승호, 정의창1
한남대학교 화학과, Korea
1한국원자력연구원 원자력화학연구부, Korea
Single-particle Inductively Coupled Plasma-Mass Spectrometer (SPICP-MS) provides transient signal induced by ionization of single colloidal particle in plasma, which produces a flash of ions that is measured by mass spectrometer. The SPICP-MS signal intensity depends on the particle size, and the frequency is proportional to the concentration of the colloids. Thus, SPICP-MS provides information on the particle size as well as the concentration of the particles. Sedimentation field-flow fractionation (SdFFF) provides a mass-based separation, and thus a size-based separation of particles if they are of uniform density. In this study, SdFFF was employed for determination of the size distributions of rutile TiO2 nanoparticles. SdFFF results revealed that the rutile TiO2 nanoparticles have the mean diameter of 78 nm and the size distribution ranging from 50 to 110 nm. The size distributions of the TiO2 particles obtained by SdFFF were compared with those obtained from SPICP-MS. SdFFF fractions were collected and the collected TiO2 particles were analyzed by SPICP-MS to determine the size and Ti concentration of the particles. The size and concentration of TiO2 fractions obtained from SPICP-MS were correlated well with SdFFF results.