「110年排放管道中粒狀污染物檢測技術評鑑績效評估計畫」
| 中文摘要 | 政策的規劃與執行需要精確與準確的檢測結果，對檢測業者進行能力試驗(Proficiency testing)，可提升檢測結果的品質。為此，環境檢驗所建置一可產生穩定風速與質量濃度之模擬煙道，藉此提升國內檢測技術。並藉著累積比測資料，建立模擬煙道不同參數對風速與質量濃度之關係，作為評估檢測業者檢測能力之標準。 至期末報告為止已完成22場次比測，並完成資料與模式分析，其中有19場次進行低濃度比測，符合契約中所有工作項目之要求。比測內容包括氣體組成、風速與質量濃度量測，累積的數據使用線性迴歸模型進行分析，並使用模型的三倍標準差作為評分的標準。相較於往年，今年度的比測風速範圍提升至3 - 15 m/s間，比測質量濃度降低至20 mg/Nm3以下。歷年資料顯示比測能力有逐年提升，不合格率約為11%，平均分數為87.4分，風速不合格的比例約為5.4%，質量濃度則是5.56%。 比測誤差主要來自於人員操作失誤以及樣品回收乾燥秤重程序，排氣參數的量測則較沒有明顯的影響。標準分數顯示風速量測結果有較大的變異，可能是風速模式的標準差相對較小之緣故。將110年數據加入模式後，模式的風速標準差為0.397 m/s，質量濃度標準差為17.4 mg/Nm3，風速與質量模式的R2分別為0.996與0.982。 | ||
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| 中文關鍵字 | 粒狀物採樣、排放管道、粒狀污染物 | ||
基本資訊
| 專案計畫編號 | 經費年度 | 110 | 計畫經費 | 1760 千元 | |
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| 專案開始日期 | 2021/02/18 | 專案結束日期 | 2021/12/31 | 專案主持人 | 林志威 |
| 主辦單位 | 環檢所 | 承辦人 | 龔聖祐 | 執行單位 | 國立臺灣大學 |
成果下載
| 類型 | 檔名 | 檔案大小 | 說明 |
|---|---|---|---|
| 期末報告 | 110年「排放管道中粒狀污染物檢測技術評鑑績效評估計畫」期末報告(定稿)_20211220.pdf | 9MB | 期末報告定稿本 |
The evaluation program of stack PM measurement and proficiency performance
| 英文摘要 | The implementation of environmental policies needs precise and accurate measurements. Proficiency testing is essential to improve the quality of the measurements. The simulated emission stack established by Taiwan NIEA can generate stable and controllable flue gas velocity and mass concentration for the stack emission testing laboratories to carry out the proficiency testings. By accumulating testing data, the relationship between stack parameters and flue gas velocity and mass concentration can be used to evaluate the proficiency of the testing laboratories. 22 tests had been completed before the final-term report and all items listed in the contract were finished. The low mass concentration test was conducted in 19 tests. The contents of the test included gas composition, flue gas velocity, and mass concentration. The test data was analyzed by linear regression model and the standard error was used as a reference standard to evaluate the proficiency of the testing laboratories. The velocity ranged from 3 to 15 m/s, and the mass concentration can be lower than the 20 mg/Nm3. The historical data shows the proficiency has been improved and the unqualified rate is 11%. The unqualified rate for velocity and mass concentration tests are 5.4% and 5.56% respectively. The measurement errors were mainly from the inappropriate operation and the procedures of sample recovery, conditioning and weighing. There is no obvious error in the flue gas parameters. Standard scores showed that the velocity tests had a higher deviation than the mass concentration tests. This may be because the velocity model had a higher standard error. The 110 model shows the standard error in velocity model is 0.397 m/s and 17.4 mg/Nm3 in mass concentration model. The R2 for velocity and mass concentration models are 0.996 and 0.982, respectively. | ||
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| 英文關鍵字 | PM sampling, stack, particulate matter | ||