研究生: |
吳夢婷 Meng-Ting Wu |
---|---|
論文名稱: |
熱脫附氣相層析質譜儀線上分析印製用原物料與影印店室內空氣之研究 On-line TD-GC/MS to Analyze Raw Materials for Printing and Indoor Air in Photocopy Shops |
指導教授: |
凌永健
Yong-Chien Ling |
口試委員: | |
學位類別: |
碩士 Master |
系所名稱: |
理學院 - 化學系 Department of Chemistry |
論文出版年: | 2006 |
畢業學年度: | 94 |
語文別: | 中文 |
論文頁數: | 89 |
中文關鍵詞: | 氣相層析儀 、熱脫附儀 、影印店 |
相關次數: | 點閱:4 下載:0 |
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摘要
一般乾式影印過程會釋放揮發性有機化合物(VOCs)、臭氧、吸入性微粒等物質,長期處於不良的環境將直接或間接影響人體呼吸系統和慢性病傷害,甚至致癌危機。乾式影印所使用的原料有碳粉和紙張,在融入階段被加溫到180~200 ℃時,VOCs會被釋出。本研究使用熱脫附氣相層析質譜儀(GC/MS)模擬乾式雷射影印融入過程並建立線上即時(on-line)分析碳粉和紙張加溫後釋出之VOCs的方法,優點在於VOCs可全量進入GC/MS中進行分析,可彌補傳統離線(off-line)分析時VOCs流失之缺失。本研究發現影印過程中碳粉釋出之VOCs大於紙張,推估一個碳粉匣約釋出1-8 mg VOCs,一大包紙張(500張)約釋出3~10 ng VOCs。建立之方法亦應用於分析報紙,推估日常一份報紙VOCs釋放量約為14 ug。
室內空氣品質影響人的舒適感和工作效率,本研究利用Tenax GR吸附劑採集影印店室內空氣,參考美國EPA TO-17方法,以熱脫附GC/MS進行定性和定量。方法偵測極限為0.17~0.39 ppbv,平均回收率介於96~113 %,精密度<10%,檢量線的R2皆在0.995以上。測得之VOCs有八成來自碳粉釋出,定量兩家影印店室內空氣中之BTEXS等9種VOCs,總VOCs濃度分別為0.09和0.08 mg/m3,濃度最高為甲苯9.05 ppbv,其中一家影印店有測到影機清洗用的異戊酸,濃度高達16.47 ppbv。
Abstract
Dry-process photocopy was reported to emit volatile organic compounds (VOCs), O3 and particulates. Raw materials used in dry-process photocopy include toners and plain papers, and would emit VOCs when being heated to fuser temperature (180~200 ℃). We mimic fusing process in dry-process photocopy by TD-GC/MS and set up on-line method to analyze VOCs emitted from heated toner and plain paper. Compared to off-line method which may lose VOCs during the analysis, on-line method is advantageous to capture and introduce all released VOCs into TD-GC/MS for subsequence. We found more VOCs emitted from toners than plain paper. One toner cartridge was estimated to emit 1~8 mg VOCs; whereas one package of plain papers (500 sheets) will emit 3~10 ng VOCs emitted from. This method was also applied to analyze newspapers. One copy of newspaper (ex. 10 sheets) was estimated to emit 14 □ug VOCs.
Indoor air quality (IAQ) has effect on people ease and working efficiency. We use the analytical method based on U.S. Environmental Protection Agency (EPA) TO-17 using Tenax GR as absorbent to sample indoor air in photocopy shops. Qualitative and quantitative analysis was performed using TD-GC/MS. The method detection limits (MDL) and average recoveries for the target analytes were in the range 0.17~0.39 ppbv and 96~113 %, respectively. The method shows good linearity (R2 ≧0.995) and precision (<10 %). About 80% VOCs were emitted from toners in the indoor air photocopy shop. We also quantified nine of VOCs including BETEX etc. Total volatile organic compounds (TVOC) in two photocopy shops were 0.09 and 0.08 mg/m3, individually. The highest concentration was toluene 9.05 ppbv. Isovaleric acid used as cleaning reagent was measured in one photocopy shop at a concentration of 16.47 ppbv.
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