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完整後設資料紀錄
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.advisor | 陳志傑(Chih-Chieh Chen) | |
dc.contributor.author | Chao-Chun Chan | en |
dc.contributor.author | 詹朝竣 | zh_TW |
dc.date.accessioned | 2021-06-15T04:04:31Z | - |
dc.date.available | 2012-03-12 | |
dc.date.copyright | 2010-03-12 | |
dc.date.issued | 2010 | |
dc.date.submitted | 2010-02-10 | |
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Aerosol Science and Technology 18(2): 143 - 155. 張光男 (2004). 可控制粒徑分佈之氣懸微粒產生器與粒徑分佈對微粒負載特性的影響. 職業醫學與工業衛生研究所. 台北, 國立台灣大學. 碩士: 72. 賴全裕 (1995). 氣懸微粒分徑採樣器的研發--以海綿為分徑材質. 職業醫學與工業衛生研究所. 台北, 國立台灣大學. 碩士: 91 | |
dc.identifier.uri | http://tdr.lib.ntu.edu.tw/jspui/handle/123456789/45101 | - |
dc.description.abstract | 目前對於作業場所呼吸性粉塵在採樣上的分徑準則上乃是以美國工業衛生技師協會(ACGIH)、國際標準組織(ISO)、以及歐洲標準委員會(CEN)等三個機構所共同研商協議的結果為準則。目前已發展出以多孔泡棉作為在前置分徑裝置來達成呼吸性粉塵採樣曲線之要求。此外,將海綿應用在衝擊採樣器上微粒收集介質的研究也為數多有,並顯示海綿在解決微粒撞擊衝擊面之後的彈跳現象有明顯之改善,但目前尚未有海綿孔隙數與其他特性對於衝擊收集效應影響之深入探討。海綿作為衝擊器之收集介質方面,本研究藉由改變海綿孔隙數、直徑大小、厚度與封邊套環之有無提供不同的穿透率需求,並尋求最接近呼吸性粉塵曲線之最佳組合,以達到採樣器佳化之目的。
本款採樣器在使用上仍有微粒彈跳之問題,但可藉調整海綿直徑來改變穿透率曲線之斜率,以減小微粒彈跳所造成的影響。而微粒負載後再度彈跳之問題,顯示本採樣器並不適宜用於氣膠粒徑較大的環境之中。 | zh_TW |
dc.description.abstract | In order to match the ISO/CEN/ACGIH respirable sampling criteria, applying porous polyurethane foam (PUF) to impactors on particle aerodynamic size fractioning has been studied. However, one of the inherent problems of impactors is particle bounce off the collecting plates, even though a foam substrate was applied. There is no study to examine the effect of porosity of foam on fractioning and loading property. The objective of this study is to optimize a respirable aerosol sampler with foam and identifying the foam’s effects on sampling efficiency.
Using PUF with a diameter of 3 mm at a flow rate of 1.8 lpm was demonstrated to meet the ISO/CEN/ACGIH respirable sampling criteria well in this study. Results also showed that particle bounce can be minimized by applying PUF as collecting substrate. However, this impactor is not suitable applying for large diameter aerosol environments because of its available time is about 15 mins. | en |
dc.description.provenance | Made available in DSpace on 2021-06-15T04:04:31Z (GMT). No. of bitstreams: 1 ntu-99-R96841015-1.pdf: 2954145 bytes, checksum: dd2ac1a8b6ab06af62f4a16128012880 (MD5) Previous issue date: 2010 | en |
dc.description.tableofcontents | 致謝 i
目錄 ii 圖表目錄 iv 中文摘要 vi 英文摘要 vii 第一章 緒論 1 1.1 研究緣起 1 1.2 研究目的 3 第二章 文獻探討 5 2.1國際建議分徑標準與分徑式採樣器 5 2.2慣性衝擊原理與衝擊採樣器設計 9 2.3微粒的吸附作用與彈跳模式 11 2.4衝擊表面與微粒之彈性特性 16 2.5海綿收集介質之特性與過濾機制 18 2.6海綿介質之衝擊採樣器 21 第三章 研究方法 22 3.1衝擊式氣膠採樣器之設計與特性研究 22 3.2測試微粒的產生與量測 23 3.3材質與特性 24 3.4資料分析 25 第四章 結果與討論 26 4.1衝擊採樣器之特性探討 26 4.2微粒彈跳現象之探討 27 4.3海綿衝擊介質之特性研究 29 4.4符合呼吸性粉塵曲線之採樣器設計 32 4.5海綿衝擊介質之負載效應 33 第五章 結論與建議 35 參考文獻 36 | |
dc.language.iso | zh-TW | |
dc.title | 以海綿為衝擊介質呼吸性粉塵分徑採樣器之佳化研究 | zh_TW |
dc.title | Using Porous Foam as Impaction Substrate for
Optimization of Respirable Aerosol Sampler | en |
dc.type | Thesis | |
dc.date.schoolyear | 98-1 | |
dc.description.degree | 碩士 | |
dc.contributor.oralexamcommittee | 鄭福田(Fu-Tien Jeng),吳焜裕(Kuen-Yuh Wu),吳章甫(Chang-Fu Wu),林文印(Wen-Yinn Lin),黃政雄(Cheng-Hsiung Huang) | |
dc.subject.keyword | 氣膠採樣,海綿,衝擊器,呼吸性粉塵,微粒彈跳, | zh_TW |
dc.subject.keyword | aerosol sampling,porous polyurethane foam,impactor,respirable,particle bounce, | en |
dc.relation.page | 65 | |
dc.rights.note | 有償授權 | |
dc.date.accepted | 2010-02-10 | |
dc.contributor.author-college | 公共衛生學院 | zh_TW |
dc.contributor.author-dept | 職業醫學與工業衛生研究所 | zh_TW |
顯示於系所單位: | 職業醫學與工業衛生研究所 |
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