NERA034112003

112

2,850 千元

固定污染源管制

2023/01/13

2023/12/31

蕭大智

國環院環境治理研究中心

米姿蓉

國立臺灣大學

大氣空氣

氣膠，微量金屬，氣體交換裝置，單顆粒電感耦合電漿質譜儀

Aerosol，Inorganic Metal，Gas Exchange Device，Inductively Coupled Plasma Mass Spectrometer

侯文哲、林逸彬

周立媞

02-33663366#55945

d11541005@ntu.edu.tw

計畫期初，國立臺灣大學及國立成功大學兩團隊首先對於去年度所開發之 GED- ICP-MS 系統進行基質效應雙邊評估，藉由修正第一年實驗方法，團隊改變標準 品進樣流速，降低標準品在管線中凝結累積的可能性，改善輸入 ICP-MS 中單位 質量浮動不均的問題，提高分析完整性。結果顯示，經由調整後，基質效應的重 複試驗顯示該影響不明顯。而為提高 ICP-MS 靈敏度且使標準液維持液滴形態送 入 ICP-MS 分析，計畫期中，團隊改以市售之 GED(IAS96-GED-01, IAS Inc., Japan)與標準樣品進樣系統 (metal standard aerosol generation, MSAG, IAS Inc., Japan)進行相關評估，根據評估結果，決定以標準模式並搭載黑碳管作為 GED- ICP-MS 系統的條件，而目標金屬中的 Fe 以 57Fe 測定為主。計畫期末，團隊針對 現地模擬採樣進行相關測試，如系統偵測極限之測定、內標選擇與穩定性評估， 並將測試結果應用於連續監測，連續監測結果與平行採樣濾紙進行分析比較。另 外，團隊亦結合 PMF 進行相關溯源，由 PMF 因子結果可推估，污染來源主要由 附近交通所貢獻之。

氣膠，微量金屬，氣體交換裝置，單顆粒電感耦合電漿質譜儀

期末報告定稿本.pdf

28MB

2024/2/1 上午 12:00:00

In this project, two teams from National Taiwan University and National Cheng Kung University conducted a mutual assessment of the matrix effects on the GED-ICP-MS system developed in the previous year. By modifying the experimental methods in the first year, the teams adjusted the sample introduction flow rate of the standard solution to reduce the likelihood of condensation and accumulation in the pipeline. This aimed to address the uneven unit mass fluctuation issue in the input ICP-MS and improve overall analytical integrity. The results showed that after the adjustments, the repetition tests for matrix effects indicated no significant impact. In order to enhance the sensitivity of ICP-MS and maintain the standard solution in droplet form for analysis, the teams, in the middle of the project, switched to using commercially available GED (IAS96-GED-01, IAS Inc., Japan) and standard sample introduction system (metal standard aerosol generation, MSAG, IAS Inc., Japan) for relevant evaluations. Based on the assessment results, it was decided to use the standard mode with a black carbon tube as the condition for the GED-ICP-MS system, with a focus on the determination of Fe using 57Fe. For the monitoring experiment, the teams conducted relevant tests for on-site simulated sampling, including measurements of system detection limits, internal standard selection, and stability assessment. The test results were then applied to continuous monitoring, and the results of continuous monitoring were compared with parallel sampling filter paper analysis. Additionally, the teams integrated Positive Matrix Factorization (PMF) for source apportionment. According to the PMF factor results, it was estimated that the main source of pollution was contributed by nearby traffic.

Aerosol，Inorganic Metal，Gas Exchange Device，Inductively Coupled Plasma Mass Spectrometer