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  • 09월 08일 17시 이후 : 초록수정 불가능, 일정확인 및 검색만 가능

제116회 대한화학회 학술발표회, 총회 및 기기전시회 안내 Collection and characterization of airborne using an electrical charge-based particle collector and field-flow fractionation (FFF)

2015년 9월 3일 16시 09분 08초
ANAL2.O-18 이곳을 클릭하시면 발표코드에 대한 설명을 보실 수 있습니다.
금 15시 : 43분
분석화학 - Oral Presentation of Young Analytical Chemists II
저자 및
최재영, 김운중, 음철헌1, 이승호*
한남대학교 화학과, Korea
1한국지질자원연구원 화학분석연구실, Korea
Airborne is a particulate matter (usually having the particle size ranging 0.1~200 μm) that floats or flies in air. They are formed by either natural or artificial occurrence such as sand dust or the use of fossil fuels in power plants. They react with chemical substances, and produce compounds such as sulfate or nitrate. Frequently they contain heavy metals or toxic organic compounds. Depending on the particle size, they show different behaviors, and sometimes, affect the human health and the environment. It is thus necessary to be able to identify the cause of occurrence and to analyze the particle size and chemical composition of the airborne. For accurate analysis of airborne particles, efficient and representative sampling is required. In this study, a new airborne collector was implemented and tested. This new airborne collector employs an electrical force, and does not need a filter, allowing to avoid adsorption or modification of the particles by the filter. Also it does not require the sample concentration such as drying, washing, vortexing and centrifuging. Split flow thin cell fractionation (SF) is a continuous separation method, allowing a large-scale separation of particles into two populations of different size ranges. SF was employed to separate the collected airborne particles into two populations (one in nanometer and another in micrometer ranges). Field-flow fractionation (FFF) is a size-based separation technique that is useful for analysis of colloidal particles. Collected airborne particles were analyzed by FFF for determination of the particle size and its distribution. An inductively coupled plasma mass spectrometry (ICP-MS) was also employed for compositional analysis of the collected airborne particles.