https://scholars.lib.ntu.edu.tw/handle/123456789/77161
Title: | 奈米微粒與健康風險研究─總計畫暨子計畫一:可控制粒徑分布型態奈米氣懸微粒產生技術之研究(I) | Authors: | 鄭福田 | Keywords: | 奈米氣膠;電噴霧式氣膠產生器;粒徑分布;nanoparticle;aerosol generator;Electrospray | Issue Date: | 31-Jul-2003 | Publisher: | 臺北市:國立臺灣大學環境工程學研究所 | Abstract: | 各類型污染源所產生及大氣環境中奈米氣懸微粒之粒徑分布隨其相應之環境事件,各 有不同之特性。由於目前並無製造可控制粒徑分布型態奈米氣懸微粒以模擬各類型污染源 或大氣環境奈米微粒分布型態之微粒產生技術,本研究主要目標即在研發一套能夠控制粒 徑分布型態之奈米微粒產生系統,以提供各種奈米氣懸微粒研究所需穩定之測試微粒來源 及相關研究之推展。 本研究主要方法是利用靜電噴霧氣膠產生器為液體霧化式單一粒徑奈米微粒產生設備 之特性,將其液體進料系統改裝為可程式控制之混合進料系統,噴霧產生濃度不同之單一 粒徑液滴,其後液滴乾燥後即留下具備多重粒徑分布型態之奈米微粒。儀器組裝測試完成 後,藉由掌握各項參數對粒徑大小及分布型態之影響,即可控制各項參數以調整產生與代 表樣品具備類似大小與分布型態之模擬樣品。 The size distributions of airborne nanoparticle are influenced by pollutant sources and atmospheric environment and are variable to different time and sites. There are some aerosol generators could generate monodisperse or polydisperse aerosols, but no one could control the size distribution pattern to simulate the ambient air of different characteristics. The nanoparticle generator that can control the size distribution pattern of particle generated and simulate different environment. The nanoparticle generator can afford a stable aerosol source to be used to evaluate the performance of air pollution control devices and the human health effects of ultrafine particles. Electrospray aerosol generator is a monodisperse aerosol generator. We propose to adopt its liquid supply system into a programmable multi-supply system. The aerosols generated by the generator are still monodisperse but with variable concentration. After the aerosols are dried in the test chamber, it leaves the aerosols of polydisperse. By changing the concentration of injected liquid in series in each cycle time, we can get a specific aerosol size distribution pattern and try to resembling atmospheric environment. |
URI: | http://ntur.lib.ntu.edu.tw//handle/246246/22124 | Other Identifiers: | 912621Z002023 | Rights: | 國立臺灣大學環境工程學研究所 |
Appears in Collections: | 環境工程學研究所 |
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912621Z002023.pdf | 1.24 MB | Adobe PDF | View/Open |
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