行政院環境保護署 環保專案成果報告查詢系統

109

14,750 千元

空氣品質監測

2020/11/26

2023/01/25

葉雨松

監資處

陳香宇

瑩諮科技股份有限公司

大氣空氣

細懸浮微粒、現場查核、平行比對

Fine Particulate Matters, Field Check, Collocated Measurement

張木榮

07-8151680#126

papayahell@gmail.com

　　本計畫執行期限為自109年11月26日至111年11月25日止，主要執行PM2.5手動監測現場儀器及操作程序查核、實驗室秤重查核及精密性比對等品保作業，以確保採樣作業及秤重分析品質，提升數據可信度目的。 　　現場儀器查核主要確認採樣器功能，共完成128站次，整體查核滿意率為100%；另現場操作程序查核共完成375站次，查核缺失項均已完成改善。 　　驗室秤重查核主要針對濾紙調理秤重、實驗室品質管理等查核，確保秤重分析品質。本計畫共完成24次實驗室秤重查核，查核缺失項均已完成改善。另完成4次實驗室間秤重比對，比對結果皆符合允收標準。 　　現場平行比對依據環檢所公告方法，與測站手動採樣器同步採樣，以確保數據可信度。本計畫共完成245站次，其中230筆濃度大於3 μg/m3，且比對濃度差值多數為0~±1 μg/m3間，顯示監測數據具高度可信度。 　　監測數據品保審查主要確認採樣表單填寫、濃度計算、品保品管等，與檢測方法符合性。本計畫共審查7,564筆監測數據，其中「暫停採樣」30站次、「無效數據」152筆、及「有效數據」7,382筆，整體數據可用率為97.6%。 　　無論現場查核、實驗室秤重查核等作業所發現之缺失項，皆於每次月維護會議中提出檢討，並由三區採樣單位提出改善狀況，後續由環保署及本計畫執行缺失改善追蹤。

細懸浮微粒、現場查核、平行比對

EPA109A329.pdf

8MB

2023/3/1 上午 12:00:00

　　This report provides information of quality assurance for PM2.5 sampling activities from November 26, 2020 through Novembeer 25, 2022. The mission of the project comprises implementation of inspection, performance audit, and collocated comparison for field sampling and laboratory analyzing, so that requirements and goals for PM2.5 monitoring will be fulfilled. 　　The performance audit used independent instruments and standards to inspect the deviation between the monitoring value and the standard value (accuracy). 128 stations were completed in two years. The acceptance rate was 100%. In addition, 375 stations of procedure check for field operators were also included. And must follow up tracking the results of defects improvement. 　　A quality system check for laboratory refers to the organizational resources, processes and procedures to implement quality management. 24 Laboratory system audits and 4 inter-lab weighting comparisons have been accomplished in two years. All samples are within the criteria, indicating overall good inter-laboratory agreement between the test laboratories and QA-Laboratory. 　　The sampler collocation measurement is mainly based on the published method NIEA A205.11C by EPA Environmental analysis laboratory, to enhance the reliability of monitoring data. 245 field stations collocated comparisons were done in two years. 230 times valid comparisons were under circumstances of PM2.5 concentrations greater than 3 μg/m3. 0~±1 μg/m3 of concentration bias indicate a high credibility of PM2.5 manual monitoring data. 　　Data verification and validation were mainly focus on worksheet filling, concentration calculations and quality management of laboratory, to meet the requirement of NIEA method. 7,564 pieces of data validations were carried out in this project. Among these data, 152 were marked “invalid data”, and 30 were marked “not executed sample”. The overall rate of available data is 97.6%. 　　All defects from field performance audit and Laboratory check will be require to improve within certain days discussed in monthly routine data reviewing meeting, The EPA and this project will track situation of defects improvement.

Fine Particulate Matters, Field Check, Collocated Measurement