제조 나노물질의 환경농도 측정 기법
Environmental Concentration Analysis of Manufactured Nanomaterials
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초록
As nanotechnology has rapidly expanded the application area to a variety of industries, the potential toxicity of nanoparticles became the hot issue. Especially, the human health and environmental safety in the workplaces handling nanomaterials have been recognized as an urgent problem. However, at this point, a proper monitoring/characterization techniques of nanomaterials have not been standardized due to the techn ical difficulties. In this paper, the existing monitoring methods were investigated for the particulate matters. The rational monitoring methods of nanoparticles also are proposed. In order to precisely measure of nanoparticles, electricalmobility or diffusion of particles should be introduced instead of intial impaction or gravitatio n force. In addition, it is recommended that the concentration of nanoparticles should be expressed based on the numbers orsurface areas, not by mass concentration. SMPS (scanning mobility particle sizer) could be one of the proper methods to monitor nanoparticles. It is expected to develop new test guideline with improved precision after considering some factors, including portability and cost.
Abstract
As nanotechnology has rapidly expanded the application area to a variety of industries, the potential toxicity of nanoparticles became the hot issue. Especially, the human health and environmental safety in the workplaces handling nanomaterials have been recognized as an urgent problem. However, at this point, a proper monitoring/characterization techniques of nanomaterials have not been standardized due to the techn ical difficulties. In this paper, the existing monitoring methods were investigated for the particulate matters. The rational monitoring methods of nanoparticles also are proposed. In order to precisely measure of nanoparticles, electricalmobility or diffusion of particles should be introduced instead of intial impaction or gravitatio n force. In addition, it is recommended that the concentration of nanoparticles should be expressed based on the numbers orsurface areas, not by mass concentration. SMPS (scanning mobility particle sizer) could be one of the proper methods to monitor nanoparticles. It is expected to develop new test guideline with improved precision after considering some factors, including portability and cost.
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