奈米微粒作業環境控制技術性能評估

Abstract

國外的不同研究機構及標準組織已提出許多奈米微粒作業環境控制技術、暴露量測及評估方法、最佳工作法則及研究需求，且對於奈米微粒的工程控制技術、個人防護及行政管理均有一些研究進展。本計畫將評估文獻上的奈米微粒控制技術並做具體的建議，以研擬適合本國的奈米微粒控制策略。現階段奈米微粒作業環境測定數據過於缺乏，美國NIOSH已提出TiO2奈米微粒建議暴露限值，其他奈米物質的暴露限值也正積極的研究當中，因此有必要在高溫二氧化鈦製程及其他作業場所測量奈米微粒的暴露現況，了解污染來源及評估控制技術的性能。在實驗室的研究方面，本計畫擬使用較簡便的漩渦震盪器與微小粉塵分散器來進行奈米粉體揚塵特性測試，並與標準測試方法作比較，期能縮短測試的時間及成本。本計畫也擬對於工業級高效率真空HEPA吸塵器對奈米粉體的過濾效果及奈米粉體負荷後的影響進行探討，以提昇本土化的高效率工業真空吸塵器的技術水準。

There are many control measures, exposure measurement and assessment methods, best working pratices and research needs for the nanoparticle control in the workplace environments published by many institutes and standard organizations around the world. In addition, some progress has been made in the engineering control techniques, personal protection and admistrative management for engineered nanoparticles in our country and around the world. This projects aims at evaluating the control techiques of nanopaticles in the literature, propose concrete suggestions and develop a strategic plan for nanoparticle control suitable for our country. Although there is a lack of exposure data for nanoparticles in the workplaces, TiO2 recomemnded exposure limit (REL) has been proposed by the USA NIOSH and other nanomaterials are also under investigation. Therefore, it is important to conduct the exposure study in the high temperature TiO2 process and other workplaces to understand the level of nanoparticle exposure, the sources of nanoparticles, and assess the performance of control measures. In the laboratory study, this project intends to use a more convenient vortex shaker and small scale powder disperser to disperse nanopowders and conduct the dustiness tests. The results will be compared with the standard method hoping to reducce the testing time and cost. Industrial high-efficiency HEPA vacuum cleaners will also be tested for the removal efficiency of nanopowders and the effect of nanopowder loading on the efficiency will be evaluated. It is hoped the results are helpful to the improvement of industrial HEPA vacuum cleaners for nanoparticel control in our country.