本研究目的在於探討以不同之可呼吸性粉塵採樣器所採集之粉塵，在捕集濾紙上均勻性之情形，並瞭解均勻性對定量造成之干擾。本研究以37-mm SKC、25-mm SKC、 Nylon Cyclone、IOSH Cyclone進行鑄造廠之可呼吸性粉塵採樣，並評估粉塵及α-石英於濾紙上之均勻性。並藉Marple進行粒徑分佈採樣，以瞭解均勻性與粒徑分佈之關係。研究結果發現無論在何區，四種採樣器所採集之可呼吸性粉塵及α-石英濃度無顯著差異。可呼吸性粉塵濃度及其α-石英含量由高而低，依序為拆模區、噴砂區、及造模區。可呼吸性粉塵之氣動粒徑質量中位數 (MMAD) 分別為2.07、1.47、1.72µm，幾何平均標準偏差 (GSD) 分別為1.98、2.31、2.43。可呼吸性粉塵及α-石英均勻度評估之結果發現，四種採樣器之均勻性優劣依序為37 mm SKC、25 mm SKC、Nylon Cyclone、IOSH Cyclone，且拆模區之均勻性優於噴砂區優於造模區，此結果與MMAD趨勢有一致性。就均勻性對定量上的干擾，分別以 NIOSH 7500分析方法及濾紙直接分析法 (on-filter analysis) 分析α-石英之含量。由於on-filter analysis只分析濾紙的中心部份，本研究亦發現到與NIOSH 7500相比有高估的情形產生。由於以on-filter analysis分析結晶型二氧化矽會受到均勻性之影響而有所限制，因此未來應可進一步發展新的可呼吸性粉塵採樣器，使其所捕集之粉塵能
均均勻分布於濾紙上，以減小因均勻性所帶來的誤差。

The objective of this study is to assess the uniformity of respirable aerosols deposited on filter while using various types of respirable samplers, and to assess the impact of the above uniformity on quantifying crystalline silica contents. The study used 37-mm SKC, 25-mm SKC, Nylon Cyclone, and IOSH Cyclone for conducting respirable sampling to assess the uniformity of dust deposited on various types of filter. Marple cascade impactor was used for characterizing particle size distribution of workplace aerosols to access their effects on uniformity. Results showed that the concentration of respirable aerosols and α-quartz had no significant difference among different workplaces. Respirable aerosols and α-quartz concentrations in sequence shared the same trend as: demolition area > blasting > molding area. The mass median aerodynamic diameters (MMAD) and geometric standard deviations (GSD) for the above three areas were 2.07, 1.47, 1.72 µm and 1.98, 2.31, 2.43, respectively. For uniformity testing, we found that both respirable aerosols and α-quartz concentrations shared the same trend as :37-mm SKC>25-mm SKC> Nylon Cyclone>IOSH Cyclone. The uniformity in demolition area was better than that in blasting area. The uniformity in blasting area was better than that in molding area, results obtained from by both and the same trend of can be found in MMAD. To assess the impact of uniformity on α-quartz quantification, we compared on-filter analysis and NIOSH 7500. Because on-filter analysis only analyzes the center of filter, our results did show that it’s had resulted in α-quartz higher concentrations than that by NIOSH 7500. It is concluded that the uniformity can cause interference on quantitative crystalline silica. This study urges the need for the development of new aerosol sampler with more uniformly aerosol
deposition characteristics on filter in the future.

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行政院勞工委員會勞工安全衛生研究所，結晶型游離二氧化矽粉塵X-射線繞射分析研究計畫，行政院勞工委員會勞工安全衛生研究所，臺北市，1994
行政院勞工委員會勞工安全衛生研究所，游離二氧化矽粉塵濃度測定參考分析方法比對，行政院勞工委員會勞工安全衛生研究所，臺北市，1995
鄭朝彬：利用影像處理技術量測不織布棉網均勻度與孔洞大小之研究。逢甲紡織工程研究所，民國八十七年。